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prof. Mariusz P. Dąbrowski




prof. Mariusz P. Dąbrowski

Head of the Cosmology Group

Institute of Physics, University of Szczecin, ul. Wielkopolska 15,
70-451 Szczecin, Poland

Room 302, phone/fax: +48-91-4441248, fax: +48-91-4441427

email: click to see the address




Research interests
International Collaboration
List of publications
Nuclear energy
Popular science talks
Interdisciplinary lectures
Some selected seminars, invited seminars and conference talks
Popular articles
Grants
Scientific prizes
Membership in Scientific Committees and Societies


Research interests:

I. Superstring and M-theory (brane) cosmology.

This is my main field of interest. String theory is now the main candidate for the theory of unified interactions (electromagnetic, weak, strong and gravitational). It assumes elementary particles are not pointlike objects but one-dimensional extended objects - strings. Those strings oscillate and suitable modes of oscillations can be interpreted as known elementary particles.

I was studying the classical evolution of test strings in curved spacetimes of black holes and cosmology. For this Nambu-Goto or Polyakov actions for strings is applied. My interest was especially in the evolution of the null strings (which generalize massless particles such as photons) and the relation between these null strings and massive (or tensile) strings. I was working on these topics in collaboration with Arne Larsen from Odense and Alex Zheltukhin from Kharkov.

I am also interested in different string-effective actions which can describe the evolution of `stringy' particles. These actions come from different string theories such as: bosonic, type I, type IIA, type IIB, heterotic together with supergravity as the low-energy limit of M-theory. My main field here is to explore different cosmological models in these effective string theories which have the Einstein general relativity as their limit. This is especially the so-called pre-big-bang scenario

in which inflation (here called superinflation) undergoes before the curvature singularity which we used to call Big-Bang. Superinflation is a kinetic-energy-driven inflation despite standard potential-energy-driven inflation. The main field responsible for superinflation is the dilaton which is also the field responsible for varying of the Newton gravitational "constant" G. The problem of singularity avoidance, closed timelike curves (CTCs), chaos as well as the role of `stringy' particles (like axion) in superstring cosmology is of very much intersest for me. These topics where already investigated by me together with John Barrow from Cambridge.

The next interest is M-theory and brane cosmology. M-theory is a strong coupling limit of superstring theories and unlike superstring theory it is 11-dimensional. Its low-energy limit is 11-dimensional supergravity. One candidate for M-theory is Horava-Witten theory which possesses different type of compactification of 11th dimension from ordinary Kaluza-Klein scheme. The point is that compactification is not on the circle but rather on a segment of a line - the orbifold. This leads to so-called brane-universe in which gauge interactions propagate only in 10 dimensions (on the two end branes) while gravity propagates in all 11 dimensions (also through the orbifold coordinate). It makes unification of coupling constants possible. A similar scenario though does not based on fundamental theory of unification is Randall-Sundrum
scenario. I studied Mixmaster type solutions within Horava-Witten theory in the same fashion as within pre-big-bang cosmology. In collaboration with M. Szydłowski, A. Krawiec and W. Godłowski from Kraków I also studied the problem of dynamical behaviour of the brane universes of the Randall-Sundrum type together with their comparison with current observational data from supernovae Ia.

II. Ekpyrotic and cyclic cosmologies. Conformal cosmology.

A new and very exciting variant of the low-energy-effective-string cosmology is the ekpyrotic and cyclic cosmologies. The main characteristics of these cosmologies is that they admit a non-singular transition from a collapsing to an expanding phase of the evolution of the universe. The difference from pre-big-bang scenario is that the transition happens first of all in a weak string coupling regime and additionally due to the appropriate coupling between the dilaton and dust and radiation the curvature singularity is also avoided. A somewhat related problem which I am interested in is the conformal cosmology - the cosmology which is based on the action invariant with respect to conformal transformations of the metric. It is interesting that the transition through curvature singularity is in weak coupling regime (as given by the dilaton coupling) for conformal cosmology. I collaborate on this topic with David Blaschke (Rostock, Darmstadt) and Tomasz Denkiewicz (Rostock, Szczecin).

III. Phantom cosmology. Sudden future singularities and Big-Rip.

Recent supernova Ia data strongly favours cosmological models with large negative pressure (w < -1) which means the cosmological constant fluid is not enough for explanation the current acceleration of the universe. The type of matter which can do that has very exotic features and formally behaves as ghost since it has negative kinetic energy (and so violates all the energy conditions). This is perhaps why it is commonly called phantom. It admits new type of singularities which are called Big-Rip since the infinite energy density is achieved for infinitely large scale factor in the universe. These singularities appear in the finite time in future of the universe. Apparently, there are some other exotic type of singularities which also may appear in future called sudden future singularities. They are temporal pressure singularities only with finite energy density and are a bit different from spatial pressure singularities (Finite Density singularities)
of the inhomogeneous Stephani models I was investigating in the past work. I studies phantom models with Marek Szydłowski and Tomasz Stachowiak from Kraków while sudden future singularities I studied myself recently.

IV. Quantum cosmology.

Quantum cosmology deals with the universe as quantum object and it can be described using Wheller-deWitt (WDW) equation of quantum gravity. In the common approach most of the geometrical and matter degrees of freedom are considered to be `frozen-in' which leaves usually just two free parameters which are the scale factor and the scalar field. The very problem of quantum cosmology is the problem of boundary conditions which are commonly opposed by the ones proposed by Hartle and Hawking `no-boundary' proposal and Vilenkin `tunneling' boundary conditions. My main interest in this field is in the problem of tunneling in oscillating (non-singular) cosmological models as well as the decoherence (the appearence of classical behaviour) and the problem of arrow of time (cosmological and thermodynamical). I am also interested in quantum cosmology based on some `stringy' effective actions and this field is commonly referred to as quantum string cosmology (QSC). We have discussed possible boundary conditions in QSC together with Claus Kiefer from Cologne.
The problem of the arrow of time in cosmology and physics is also one of my interests.

V. Observational cosmology (redshift-magnitude test, jerk, and other expansion characteristics). Inhomogeneous cosmology.

Other field of my interest is inhomogeneous models of the universe and especially their verification by the observational data of distant galaxies. It is widely believed that the microwave background anisotropies give strong resttrictions on the inhomogeneities. However, as we have shown with Martin Hendry from Glasgow the admission of new free parameters into the model gives no contradiction with observational data of supernovae Ia and extends the age of the universe for a couple of Gyrs. These topics were also by Richard Barrett and Chris Clarkson from Glasgow together with Jerzy Stelmach and Izabela Jakacka from Szczecin. Recently I have proposed some higher-order characteristics of expansion of the universe (besides the Hubble parameter, the deceleration parameter and jerk) such as kerk, lerk
etc. which may allow to discriminate between various cosmological types of fluids in the universe.

VI. Other interests (chaos, gravitational waves, gravitational lensing).

This is interest in chaotic dynamical systems in astronomy and cosmology as well as in string theory. I am also fascinated by the unique possibility of the detection of gravitational waves by the detectors under construction such as LIGO and VIRGO or the planned space detector known as LISA (Laser Interferometer Space Antenna). The gravitational lensing effects for neutron stars and boson stars are in the field of my interests too. I have also published a paper about lensing effects by boson stars in collaboration with Franz Schunck from Cologne.

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International Collaboration:

University of Odense (Denmark),
University of Cambridge (England),
University of Sussex (England),
University of Portsmouth(England),
University of Glasgow (Scotland),
University of Greifswald (Germany),
University of Rostock (Germany),
University of Cologne (Germany),
Max-Planck Institute for Gravitational Physics Golm (Germany),
Kharkov Institute of Physics and Technology (Ukraine),
Bogolyubov Institute for Theoretical Physics Kiev (Ukraine),
Bogolyubov Laboratory for Theoretical Physics Dubna (Russia),
University of Napoli (Italy).



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The list of publications:



Link to INSPIRE with bibliographical and citation data of the papers submitted to Los Alamos National Laboratory archive.

Research papers:

1. M. P. Dąbrowski and J. Stelmach, Analytic Solutions of Friedman Equation for Spatially Opened Universes with Cosmological, Constant and Radiation Pressure, Annals of Physics (N. Y.) 166, (1986), 422-442.
2. M. P. Dąbrowski and J. Stelmach, A Redshift-Magnitude Formula for the Universe with Cosmological Constant and Radiation Pressure, The Astronomical Journal 92, (1986), 1272-1277.
3. M. P. Dąbrowski and J. Stelmach, Astrophysical Formulas for Friedman Models with Cosmological Constant and Radiation, The Astronomical Journal 94, (1987), 1373-1379.
4. M. P. Dąbrowski and J. Stelmach, Observable Quantities in Cosmological Models with Strings, The Astronomical Journal, 97, (1989), 978-985.
5. J. Stelmach, R. Byrka and M. P. Dąbrowski, Large- and Small-Angle Anisotropies of Microwave Background in Cosmological Models with Non-Zero $\Lambda$-Term, Phys. Rev. D41, (1990), 2434-2443.
6. M. P. Dąbrowski, Isometric Embedding of the Spherically Symmetric Stephani Universe. Some Explicit Examples, Journal Mathematical Physics 34, (1993), 1447-1479.
7. J. Stelmach, M. P. Dąbrowski and R. Byrka, Effect of Exotic Matter on Small-Angle Anisotropies of the Microwave Background, Nuclear Physics B406, (1993), 471-482.
8. M. P. Dąbrowski, A Redshift-Magnitude Relation for Non-Uniform Pressure Universes, Astrophysical Journal, 447,(1995), 43-52.
9. M. P. Dąbrowski, Note on Kantowski-Sachs Universes, Journal of Mathematical Physics, 36, (1995), 2985-2987.
10. J. D. Barrow & M. P. Dąbrowski, Oscillating Universes,Monthly Notices of the Royal Astronomical Society 275, (1995), 850-862.
11. M. P. Dąbrowski & J. Osarczuk, Light Curves of Relativistic Charged Neutron Star, Astrophysics and Space Science, 229, (1995), 139-155.
12. M. P. Dąbrowski & A. R. Larsen, Quantum Tunneling Effect in Oscillating Friedman Cosmology, Physical Review D52, (1995), 3424-3431.
13. M. P. Dąbrowski, Oscillating Friedman Cosmology, Annals of Physics, 248, (1996), 199-219.
14. M. P. Dąbrowski, Time-Symmetrization and Isotropization of an Anisotropic Cosmological Model without Inflation, Astrophysics and Space Science, 240, (1996), 123-131.
15. J. D. Barrow & M. P. Dąbrowski, Kantowski-Sachs String Cosmologies, Phys. Rev., D55, (1997), 630-638.
16. M. P. Dąbrowski & A. R. Larsen, Null Strings in Schwarzschild Spacetime, Physical Review, D55, (1997), 6409-6414.
17. M. P. Dąbrowski & C. Kiefer, Boundary Conditions in Quantum String Cosmology, Physics Letters B397, (1997), 185-192.
18. M. P. Dąbrowski & M. A. Hendry, The Hubble Diagram of Type Ia Supernovae in Non-Uniform Pressure Universes, Astrophysical Journal 498, (1998), 67-76.
19. M. P. Dąbrowski & A. R. Larsen, Strings in Homogeneous Background Spacetimes, Physical Review D57, (1998), 5108-5117.
20. J. D. Barrow & M. P. Dąbrowski, Is There Chaos in Low-Energy String Cosmology? Physical Review D57, (1998), 7204-7222.
21. J. D. Barrow & M. P. Dąbrowski, Goedel Universes in String Theory, Physical Review D58, (1998), 103502.
22. M. P. Dąbrowski & F. Schunck, Boson Stars as Gravitational Lenses, Astrophysicsl Journal 535, (2000), 316-324.
23. M. P. Dąbrowski, Kasner Asymptotics of Mixmaster Horava-Witten Cosmology, Physics Letters B 474(2000), 52-57.
24. M.P. Dąbrowski, Quantum String Cosmologies, Annalen der Physik (Leipzig), 10 (2001), 195-217.
25. M.P. Dąbrowski, Kasner Asymptotics of Mixmaster Horava-Witten and Pre-Big-Bang Cosmologies, Nuclear Physics B (Proceedings Supplements) 102 & 103 (2001), 194-200.
26. M. P. Dąbrowski & J. Garecki, Superenergy and Supermomentum of Goedel Universes, Classical and Quantum Gravity, 19 (2002), 1-15.
27. M. P. Dabrowski, Is Supernovae Data in Favour of Isotropic Cosmologies?, Gravitation and Cosmology 8 (2002), 190-192.
28. M. P. Dąbrowski and I. Próchnicka, Null String Configurations in Black Hole and Cosmological Spacetimes, Phys. Rev. D66 (2002), 043508 (10 pages).
29. M. Szydłowski, M.P. Dąbrowski and A. Krawiec, Simple Dynamics on the Brane, Phys. Rev. D 66 (2002), 064003 (13 pages)
30. M.P. Dabrowski, "String Cosmologies" - book (title page, main body), University of Szczecin Press (195 pages), (2002).
31. M.P. Dąbrowski, T. Stachowiak and M. Szydłowski, Phantom Cosmologies Phys. Rev. D 68 (2003), 103519 (10 pages).
32. M. P. Dąbrowski, W. Godłowski and M. Szydłowski, Brane Universes Tested Against Astronomical Data, International Journal of Modern Physic D 13 (2004),1669-1702.
33. M.P. Dąbrowski and J. Garecki, Energy-Momentum and Angular Momentum of Goedel Universes, Phys. Rev. D 70 (2004), 043511 (9 pages).
34. M.P. Dąbrowski, Inhomogeneized Sudden Future Singularities, Phys. Rev.D 71 (2005), 103505 (6 pages).
35. M.P. Dąbrowski, Statefinders, Higher-Order Energy Conditions and Sudden Future Singularities, Phys. Lett. B 625
(2005), 184-189.
36. M.P. Dąbrowski and T. Stachowiak, Phantom Friedmann Cosmologies and Higher-Order Characteristics of Expansion, Annals of Physics (New York) 321 (2006), 771-812.
37. M.P. Dąbrowski, Future State of the Universe, Annalen der Physik (Leipzig) 15 (2006), 352-363.
38. A. Balcerzak and M.P. Dąbrowski, Strings at Future Singularities, Physical Review D73 (2006), 101301(R) (5 pages).
39. M.P. Dąbrowski, C. Kiefer and B. Sandhoefer, Quantum Phantom Cosmology, Physical Review D74 (2006), 044022 (12 pages).
40. M.P. Dąbrowski, T. Denkiewicz, and D. Blaschke, The Conformal Status of omega = -3/2 Brans-Dicke Cosmology, Annalen der Physik (Leipzig) 17 (2007), 237-257.
41. M.P. Dąbrowski, T. Denkiewicz, and M.A. Hendry, How far is it to a sudden future singularity of pressure?, Physical Review D75 (2007), 123524 (5 pages).
42. A. Balcerzak and M.P. Dąbrowski, Generalized Israel Junction Conditions for a Fourth-Order Brane World, Physical Review D77 (2008), 023524 (7 pages).
43. M.P. Dąbrowski, J. Garecki and D. Blaschke, Conformal transformations and conformal invariance in gravitation, Annalen der Physik (Berlin) 18 (2009), 13-32.
44. A. Balcerzak and M.P. Dąbrowski, Gibbons-Hawking Boundary Terms and Junction Conditions for Higher-Order Brane Gravity Models, Journal of Cosmology and Astroparticle Physics (JCAP) 01 (2009), 018 (14 pages).
45. M.P. Dąbrowski and T. Denkiewicz, Barotropic index w-singularities in cosmology, Physical Review D79, 063521 (2009) (5 pages).
46. M.P. Dąbrowski and J. Garecki, Statefinders and observational measurement of superenergy, Physics Letters B686 (2010), 6-10.
47. M.P. Dąbrowski, Dark energy from temporal and spatial singularities of pressure, Ann. Phys. (Berlin) 19 (2010), 299-303.
48. A. Balcerzak and M.P. Dąbrowski, Brane f(R) gravity cosmologies, Phys. Rev. D 81, 123527 (2010) (8 pages).
49. H. Ghodsi, M. A. Hendry, M. P. Dabrowski, T. Denkiewicz, Sudden Future Singularity models as an alternative to Dark Energy? Mon. Not. Roy. Astron. Soc. 414, 1517 (2011).
50. M. P. Dąbrowski, Spacetime averaging of exotic singularity universes, Physics Letters B 702 (2011) 320–323.
51. A. Balcerzak, M. P. Dąbrowski, Randall-Sundrum limit of f(R) brane-world models, Phys. Rev. D85 (2011), 063529 (5 pages) .
52. T. Denkiewicz, M. P. Dąbrowski, H. Ghodsi, M.A. Hendry, Cosmological tests of sudden future singularities, Physical Review D85 (2012), 083527 (9 pages) .
53. D.B. Blaschke, M.P. Dąbrowski, Conformal relativity versus Brans-Dicke and superstring theories, Entropy 14 (10), 1978-1996 (2012).
54. M.P. Dąbrowski and K. Marosek, Regularizing cosmological singularities by varying physical constants, Journal of Cosmology and Astroparticle Physics (JCAP) 02 (2013), 012 (17 pages).
55. A. Balcerzak and M.P. Dąbrowski, Redshift drift in a pressure gradient cosmology, Physical Review D87, 063506 (2013) (7 pages).
56. M.P. Dąbrowski, Varying Physical Constant Cosmologies and the Anthropic Principles, in: The Causal Universe, G.F.R. Ellis, M. Heller, and T. Pabjan (eds.), Copernicus Center Press, Kraków, Poland, p. 215-235 (2013).
57. A. Balcerzak, M.P. Dąbrowski, Redshift drift in varying speed of light cosmology, Physics Letters B728, 15-18 (2014).
58. T. Denkiewicz, M.P. Dabrowski, C.J.A.P. Martins, P. Vielzeuf, Redshift drift test of exotic singularity universes, Phys. Rev. D89, 083514 (2014) (6 pages).
59. M.P. Dabrowski, T. Denkiewicz, C.J.A.P. Martins, P. Vielzeuf, Variations of the fine-structure constant in exotic singularity models, Phys. Rev. D89, 123512 (2014) (8 pages).
60. A. Balcerzak and M.P. Dąbrowski, A statefinder luminosity distance formula in varying speed of light cosmology, Journal of Cosmology and Astroparticle Physics (JCAP) 06, 035 (2014) (12 pages).
61. A. Balcerzak, M.P. Dąbrowski, and T. Denkiewicz, Off-center observers versus supernovae in inhomogeneous pressure universes, Astrophysical Journal 792, 92-99 (2014) (8 pages).
62. M.P. Dąbrowski, Are Singularities the Limits of Cosmology?, in: Mathematical Structures of the Universe, M. Eckstein, M. Heller, S.J. Szybka (eds.), Copernicus Center Press, Kraków, Poland, p. 99-117 (2014).
63. K. Leszczyńska, M.P. Dąbrowski, A. Balcerzak, Varying constants quantum cosmology, Journal of Cosmology and Astroparticle Physics (JCAP) 02, 012 (2015) (15 pages).
64. V. Salzano, M.P. Dąbrowski, R. Lazkoz, Measuring the speed of light with Baryon Acoustic Oscillations, Physical Review Letters 114, 101304 (2015) (5 pages).
65. A. Balcerzak, M.P. Dąbrowski, T. Denkiewicz, D. Polarski, D. Puy, A critical assessment of some inhomogeneous pressure Stephani models, Phys. Rev. D91, 083506 (2015) (13 pages).
66. M.P. Dąbrowski, H. Gohar, Abolishing the maximum tension principle, Phys. Lett. B748, 428-431 (2015).
67. M.P. Dąbrowski, Puzzles of the dark energy in the universe - phantom, Eur. J. Phys. 36, 065017 (2015) (11 pages).
68. M.P. Dąbrowski, H. Gohar, V. Salzano, Varying constants entropic Lambda-CDM cosmology, Entropy 18, 60 (2016) (24 pages).
69. V. Salzano, M.P. Dąbrowski, R. Lazkoz, Probing the constancy of the speed of light with future galaxy survey: the case of SKA and Euclid, Phys. Rev. D93, 063521 (2016) (13 pages).
70. K. Marosek, M.P. Dąbrowski, A. Balcerzak, Cyclic multiverses, Monthly Notices of the Royal Astronomical Society, 461, 2777-2788 (2016).
71. V. Salzano, D.F. Mota, M.P. Dąbrowski, S. Capozziello, No need for dark matter in galaxy clusters within Galileon theory, Journal of Cosmology and Astroparticle Physics, 10, 033 (2016).
72. S. Robles-Perez, A. Balcerzak, M.P. Dąbrowski, M. Kraemer, Inter-universal entanglement in a cyclic multiverse, Phys. Rev. D95, 083505 (2017) (15 pages).
73. A. Balcerzak, M.P. Dąbrowski, V. Salzano, Modelling spatial variations of the speed of light, Annalen der Physik - in press (2017).
74. V. Salzano, M.P. Dąbrowski, Statistical hierarchy of varying speed of light cosmologies, Eur. Journal Phys. - submitted (2017).

Conference papers:

1. M. P. Dąbrowski and J. Stelmach, Cosmic Strings as a Candidate for Dark Matter. Astrophysical Formulae, in Large Scale Structure in the Universe IAU Symposium No 130 eds. Jean Adouze, Marie-Christine Palletan & Alex Szalay, Kluwer
Academic Publishers, (1988), 566.
2. M. P. Dąbrowski and J. Stelmach, Relation Between Astronomical Parameters
for the Universe with Cosmological Constant and Radiation Pressure, in Gauge Theory and the Early Universe eds. P. Galeotti & D. N. Schramm, Kluwer Academic Publishers, (1988), 373-382.
3. M. P. Dąbrowski and J. Osarczuk, Gravitational Lensing Properties of the Reissner-Nordstrom Type Neutron Star, Gravitational Lenses.Proceedings. International Conference on Gravitational Lenses (ICGL),Hamburg (Germany), 9-13 Sept. 1991, eds. R. Kayser, T. Schramm & L. Nieser, Lecture Notes in Physics 406, Springer-Verlag, Berlin, Germany, (1992), 366.
4. J. D. Barrow and M. P. Dąbrowski, String Cosmology and Chaos, in Current Topics in Mathematical Cosmology, eds. M. Rainer & H-J. Schmidt (World Scientific, Singapore, 1998), 53-62.
5. M. P. Dąbrowski, Problems with Chaos in String Cosmology, Proceedings of the 2nd ICRA Workshop The Chaotic Universe, eds. V. Gurzadyan & R. Ruffini, (World Scientific, Singapore, 2000), 331-349.
6. M.P. Dąbrowski, Chaotic Systems in Relativity and Cosmology, in Chaos in Dynamical Systems I, ed. M.P. Dąbrowski (Institute of Physics Publishing, University of Szczecin, 2000), 18-27.
7. M.P. Dąbrowski, Dynamics of Mixmaster Horava-Witten Cosmology, in Chaos in Dynamical Systems II, ed. M.P. Dąbrowski and J. Kozłowski (Institute of Physics Publishing, University of Szczecin, 2001), 25-39.
8. M. P. Dąbrowski, Kasner Asymptotics of Weakly and Strongly Coupled Heterotic String Cosmologies, Proceedings of the
Ninth Marcel Grossmann Meeting on General Relativity, V.G. Gurzadyan, R.T. Jantzen & R. Ruffini (eds.) (World Scientific, Singapore, 2002), 894-895.
9. M.P. Dąbrowski, Dynamics of Brane Universes, in Chaos in Dynamical Systems III, ed. M.P. Dąbrowski (Institute of Physics Publishing, University of Szczecin, 2002), 21-30.
10. F.E. Schunck and M. P. Dąbrowski, Gravitational Lensing by Boson Stars, Proceedings of the Ninth Marcel Grossmann Meeting on General Relativity, V.G. Gurzadyan, R.T. Jantzen & R. Ruffini (eds.) (World Scientific, Singapore, 2002), 2117-2118.
11. M.P. Dąbrowski, Dynamics of the Friedmann-Randall-Sundrum Brane Universes, in Chaos in Dynamical Systems IV, ed. M.P. Dąbrowski (Institute of Physics Publishing, University of Szczecin, 2003), 7-28.
12. M.P. Dąbrowski, D. Behnke and D. Blaschke, Relation between conformal cosnologies, Brans-Dicke and low-energy-effective superstring theories, Proceedings of 60th Anniversary of Victor Pervushin, Dubna (Russia) (2004), p. 128-144.
13. M.P. Dąbrowski, Introdution to Superstring and M-theory-motivated cosmologies,Proceedings of the conference "Hot points in cosmology and astrophysics", eds. V. Belyaev and D.N. Blaschke, Dubna (Russia) (2005), p. 14-37.
14. M.P. Dąbrowski and T. Denkiewicz, Isotropic and Non-isotropic conformal cosmologies, Proceedings of the conference "Hot points in cosmology and astrophysics", eds. V. Belyaev and D.N. Blaschke, Dubna (Russia) (2005), p. 38-54.
15. M. P. Dąbrowski, Phantom Dark Energy and its Cosmological Consequences, Proceedings of the Eleventh Marcel Grossmann Meeting on General Relativity, H. Kleinert, R.T. Jantzen and R. Ruffini (eds.) (World Scientific, Singapore, 2008), 1761-1763.
16. M. P. Dąbrowski and A. Balcerzak, Big-Rip, Sudden Future, and Other Exotic Singularities in the Universe, Proceedings of the Eleventh Marcel Grossmann Meeting on General Relativity, H. Kleinert, R.T. Jantzen and R. Ruffini (eds.) (World Scientific, Singapore, 2008), 2051-2053.
17. M.P. Dąbrowski, Fourth-order Gravities, Statefinders and Exotic Cosmological Singularities, Physics and Mathematics of Gravitation, K.E. Kunze, M. Mars, and Miguel Vazquez-Mozo (eds.), AIP Conference Proceedings Volume 1122 (Melville, New York, 2009), 244-247.
18. D.B.Blaschke, M.P.Dąbrowski, V.V.Dmitriev, and S.A.Smolyansky, Kinetic description of W and Z boson vacuum creation in the early Universe.
Proc. of the XIX Int. Baldin Seminar on High Energy Phys. Problems "Relativistic Nuclear Physics and Quantum Chromodynamics", Dubna,
Sept.29 - Oct.4 (2008); v.2, p.198-201.
19. M.P. Dąbrowski and A. Balcerzak, Higher-order brane gravity models, Proceedings of the conference "Invisible universe", Paris 29.06-3.07.2009, AIP Conference Proceedings Volume 1241 (Melville, New York, 2010), 468-476.
20. M.P. Dąbrowski and T. Denkiewicz, Exotic-singularity-driven dark energy, Proceedings of the conference "Invisible universe", Paris 29.06-3.07.2009, AIP Conference Proceedings Volume 1241 (Melville, New York, 2010), 561-570.
21. M.P. Dąbrowski and K. Marosek, Varying Constant Cosmologies and Cosmic Singularities, Proceedings of the conference "Multiverse and Fundamental Cosmology", Szczecin 10-14.09.2012), AIP Conference Proceedings Volume 1514 (Melville, New York, 2013), 35-38.
22. M.P. Dąbrowski, K. Marosek, A, Balcerzak, Standard and exotic singularities regularized by varying constants, Memoria della Societa Astronomica Italiana 85, 44-49 (2014).
23. M.P. Dąbrowski, V. Salzano, A. Balcerzak, R. Lazkoz, New tests of the variability of the speed of light, EPJ Web of Conferences 126, 04012 (2016).
24. M.P. Dąbrowski, Singularities and cyclic universes, Acta Phys. Pol. B 10, 415-418 (2017).


Electronic preprints:


1. M. P. Dabrowski Oscillating Friedmann Cosmology, gr-qc/9503017.
2. M. P. Dabrowski & A. L. Larsen, Quantum Tunneling Effect in Oscillating Friedmann Cosmology, gr-qc/9504025.
3. M. P. Dabrowski, Time-Symmetrization and Isotropisation of Stiff-Fluid Kantowski-Sachs Universes,gr-qc/9510064.
4. J. D. Barrow & M. P. Dabrowski, Kantowski-Sachs String Cosmologies, hep-th/9608136.
5. M. P. Dabrowski & A. L. Larsen, Null Strings in Schwarzschild Spacetime,hep-th/9610243.
6. M. P. Dabrowski & C. Kiefer, Boundary Conditions in Quantum String Cosmology, hep-th/9701035.
7. M. P. Dabrowski & M. A. Hendry, Non-Uniform Pressure Universes: The Hubble Diagram of Type Ia Supernovae
and the Age of the Universe, astro-ph/9704123.
8. M. P. Dabrowski & A. L. Larsen, Strings in Homogeneous Background Spacetimes,hep-th/9706020.
9. J. D. Barrow & M. P. Dabrowski, Is There Chaos in Low-Energy String Cosmology?, hep-th/9711049.
10. J. D. Barrow & M. P. Dabrowski, Godel Universes in String Theory, gr-qc/9803048.
11. J. D. Barrow & M. P. Dabrowski, String Cosmology and Chaos, gr-qc/9806023.
12. M. P. Dabrowski & F. E. Schunck, Boson Stars as Gravitational Lenses,astro-ph/9807039.
13. M. P. Dabrowski & A. A. Zheltukhin, Perturbative String Dynamics Near the Photon Sphere, hep-th/9809176.
14. M. P. Dabrowski, Is Supernovae Data in Favour of Isotropic Cosmologies, gr-qc/9905083.
15. M. P. Dabrowski, Kasner Asymptotics of Horava-Witten Cosmology, hep-th/9911217.
16. M. P. Dabrowski, Mixmaster Horava-Witten Cosmologies, hep-th/0102065.
17. M. P. Dabrowski & J. Garecki, Superenergy and Supermomentum of Godel Universes, gr-qc/0102092.
18. M. Szydlowski, M.P. Dabrowski and A. Krawiec, Dynamics, Cosmic Acceleration and Horizons on the Brane, hep-th/0201066.
19. M. P. Dabrowski and I. Prochnicka, Null String Configurations in Black Hole and Cosmological Spacetimes, hep-th/0201180.
20. M. P. Dabrowski, W. Godlowski and M. Szydlowski, Brane universes tested by supernovae, astro-ph/0210156.
21. M.P. Dabrowski, W. Godlowski and M. Szydlowski, Astronomical tests for brane universes and the dark energy on the brane,
astro-ph/0212100.
22. M.P. Dabrowski, T. Stachowiak and M. Szydlowski, Phantom cosmologies,
hep-th/0307128.
23. M.P. Dabrowski and J. Garecki, Energy momentum and angular momentum of Goedel universes, gr-qc/0309064.
24. D. Blaschke and M.P. Dabrowski, Conformal cosmology versus Brans-Dicke and superstring theories, hep-th/0407078.
25. M.P. Dąbrowski and J. Stelmach, Observable quantities in cosmological models with strings, astro-ph/0410334.
26. M.P. Dąbrowski, Inhomogenized sudden future singularities, gr-qc/0410033.
27. M.P. Dąbrowski and T. Stachowiak, Generalized phantom cosmologies, hep-th/0411199.
28. M.P. Dąbrowski, Statefinders, Higher-Order Energy Conditions and Sudden Future Singularities, gr-qc/0505069.
29. M.P. Dąbrowski, T. Denkiewicz, and D. Blaschke, The Conformal Status of omega = -3/2 Brans-Dicke Cosmology, hep-th/0507068.
30. A. Balcerzak, M.P. Dąbrowski, Strings at future singularities, hep-th/0604034.
31. M.P. Dąbrowski, C. Kiefer and B. Sandhoefer, Quantum Phantom Cosmology, hep-th/0605229.
32. M.P. Dąbrowski, Future State of the Universe, astro-ph/0606574.
33. M. P. Dąbrowski, Phantom Dark Energy and its Cosmological Consequences, gr-qc/0701057.
34. M. P. Dąbrowski and A. Balcerzak, Big-Rip, Sudden Future, and Other Exotic Singularities in the Universe, gr-qc/0701056.
35. M.P. Dąbrowski, T. Denkiewicz, and M.A. Hendry, How far is it to a sudden future singularity of pressure?, 0704.1383.
36. A. Balcerzak and M.P. Dąbrowski, Generalized Israel Junction Conditions for a Fourth-Order Brane World, 0710.3670.
37. M.P. Dąbrowski and J. Garecki, Energy, Angular Momentum, Superenergy and Angular Supermomentum in Conformal Frames, 0712.1358.
38. A. Balcerzak and M.P. Dąbrowski, Gibbons-Hawking Boundary Terms and Junction Conditions for Higher-Order Brane Gravity Models, 0804.0855.
39. M.P. Dąbrowski, J. Garecki and D. Blaschke, Conformal transformations and conformal invariance in gravitation, 0806.2683.
40. D.B. Blaschke, M.P. Dąbrowski, V.V. Dmitriev, S.A. Smolyansky, Kinetic description of W and Z boson creation in the early universe, 0812.0994.
41. M.P. Dąbrowski, A Redshift-Magnitude Relation for Non-Uniform Pressure Universes, 0902.2899.
42. M.P. Dąbrowski and T. Denkiewicz, Barotropic index w-singularities in cosmology, 0902.3107.
43. M.P. Dąbrowski and J. Garecki, Statefinders and observational measurement of superenergy, 0905.4534.
44.M.P. Dąbrowski and A. Balcerzak, Higher-order brane gravity models, 0909.1079.
45. M.P. Dąbrowski and T. Denkiewicz, Exotic-singularity-driven dark energy, 0910.0023.
46. A. Balcerzak, M. P. Dabrowski, Brane f(R) gravity cosmologies, 1004.0150.
47. H. Ghodsi, M. A. Hendry, M. P. Dabrowski, T. Denkiewicz, Sudden Future Singularity models as an alternative to Dark Energy?, 1101.3984.
48. M. P. Dabrowski, Spacetime averaging of exotic singularity universes, 1105.3607.
49. A. Balcerzak, M. P. Dabrowski, Randall-Sundrum limit of f(R) brane-world models, 1107.3048.
50. T. Denkiewicz, M. P. Dabrowski, H. Ghodsi, M.A. Hendry, Cosmological tests of sudden future singularities, 1201.6661.
51. M. P. Dabrowski, K. Marosek, Regularizing cosmological singularities by varying physical constants, 1207.4038.
52. A. Balcerzak, M.P. Dabrowski, Redshift drift in a pressure gradient cosmology, 1210.6331.
53. M.P. Dabrowski, K. Marosek, A. Balcerzak, Standard and exotic singularities regularized by varying constants, 1308.5462.
54. A. Balcerzak, M.P. Dabrowski, Redshift drift and luminosity distance in VSL cosmology, 1310.7231.
55. A. Balcerzak, M.P. Dabrowski, T. Denkiewicz, Off-center observers versus supernovae in inhomogeneous pressure universes, 1312.1567.
56. T. Denkiewicz, M.P. Dabrowski, C.J.A.P. Martins, P. Vielzeuf, Redshift drift test of exotic singularity universes, 1402.0520.
57. A. Balcerzak and M.P. Dabrowski, A statefinder luminosity distance formula in varying speed of light cosmology, 1406.0150.
58. M.P. Dabrowski, T. Denkiewicz, C.J.A.P. Martins, P. Vielzeuf, Variations of the fine-structure constant $\alpha$ in exotic singularity models, 1406.1007.
59. M.P. Dąbrowski, Are singularities the limits of cosmology?, 1407.4851.
60. A. Balcerzak, M.P. Dąbrowski, T. Denkiewicz, D. Polarski, D. Puy, A critical assessment of some inhomogeneous pressure Stephani models, 1409.1523.
61. M.P. Dąbrowski, Puzzles of the dark energy in the universe - phantom, 1411.2827.
62. K. Leszczyńska, M.P. Dąbrowski, A. Balcerzak, Varying constants quantum cosmology, 1411.6094.
63. V. Salzano, M.P. Dąbrowski, R. Lazkoz, Measuring the speed of light with Baryon Acoustic Oscillations, 1412.5653.
64. M.P. Dąbrowski, H. Zohar, V. Salzano, Varying constants entropic Lambda-CDM cosmology, 1503.08722.
65. M.P. Dąbrowski, H. Gohar, Abolishing the maximum tension principle, 1504.01547
66. K. Marosek, M.P. Dąbrowski, A. Balcerzak, Cyclic multiverses, 1509.04074
67. V. Salzano, M.P. Dąbrowski, R. Lazkoz, Probing the constancy of the speed of light with future galaxy survey: the case of SKA, Euclid, and WFIRST2.4, 1511.04732
68. A. Balcerzak, M.P. Dąbrowski, V. Salzano, Modelling spatial variations of the speed of light, 1604.07655
69. V. Salzano, D.F. Mota, M.P. Dąbrowski, S. Capozziello, No need for dark matter in galaxy clusters within Galileon theory, 1607.02606
70. V. Salzano, M.P. Dąbrowski, Statistical hierarchy of varying speed of light cosmologies, 1612.06367
71. N.A. Nilsson, M.P. Dąbrowski, Constraining Lorentz Invariance Violating Scenarios in Rainbow Gravity by Cosmological Data, 1701.00533
72. S. Robles-Perez, A. Balcerzak, M.P. Dąbrowski, M. Kraemer, Inter-universal entanglement in a cyclic multiverse, 1701.04773






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Nuclear energy:

  • ``Nuclear power plant in WestPomeranian region" A talk delivered at the meeting of the Energy Council at the WestPomeranian Voivodship Office on 18.03.2009; delivered also for "Akademia Młodych", Szczecin on 02.02.2009 and for the "Business Club Szczecin" on 28.05.2009.
  • K. Czerski , M. P. Dąbrowski, Nuclear program development
    perspectives in Westpomeranian Region (in polish),
    Biuletyn Informacyjny Województwa Zachodniopomorskiego 07/2009.




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    Popular science talks (in polish):


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    Interdisciplinary lectures (in english):






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    Some selected seminars, invited seminars and conference talks:

    • "Analytic solutions of Friedmann equation with cosmological constant and radiation pressure" 8.06.84, University of Wrocław, Poland
    • "A redshift-magnitude relation for Friedmann universes with cosmological constant and radiation pressure" 12.86, University of Warsaw, Poland
    • "Observable quantities in cosmology" 05.87, Copernicus Center, Warsaw,Poland
    • "Observable quantities in cosmological models with strings" 10.87, Copernicus Center, Warsaw, Poland
    • "Observable quantities in cosmological models with matter of different equations of state" 9.06.1989, University of Wrocław, Poland
    • "From Big-Bang to galaxy formation" 10.90, University of Wrocław, Poland
    • "Strong gravitational lensing of a charged neutron star" 11.91, University of Szczecin, Poland
    • "Gravitational lensing properties of a charged neutron star" 11.93, University of Sussex, UK
    • "Inhomogeneous pressure universes" 01.94, University of Sussex, UK
    • "Superstring cosmologies" 05.96, University of Sussex, UK
    • "Anisotropic string cosmologies" 07.96, University of Portsmouth, UK
    • "A redshift-magnitude relation for inhomogeneous pressure universes" 07.96, University of Bonn, Germany
    • "Quantum tunneling effect in oscillating Friedmann cosmology" 10.96, University of Freiburg, Germany
    • "Quantum tunneling of macroscopic universes" 28.01.97 - Yagiellonian University, Kraków, Poland
    • "Chaos and string cosmology" 25.10.97 - University of Sussex, Brighton, England
    • "Quantum string cosmology" 11.11.97 - University of Sussex, Brighton, England
    • "Inhomogeneous pressure universes and their observational consequences" 9.12.97 - Queen Mary and Westfield College, London, England
    • "Is there chaos in string cosmology" 26.01.98 - University of Portsmouth, England
    • "Gravitation wave detection" 15.02.98 - University of Sussex, Brighton, England
    • "Chaos in string cosmology" 30.03.98 - International Conference on Mathematical Cosmology, University of Potsdam, Germany
    • "Inhomogeneous cosmological models" 28.05.98 - University of Glasgow, Scotland
    • "Gravitational lensing in scalar field theories" 15.06.98 - University of Sussex, Brighton, England
    • "Goedel Universes from low-energy-effective-actions for strings" 1.10.98 - International Conference "Beyond the Standard Model" Deutsche Electronen Synchrotron (DESY), Hamburg, Germany
    • "Chaos in relativity and cosmology" 28.11.98 - University of Greifswald, Germany
    • "Superstring cosmologies" 4.12.98 - University of Wrocław, Wrocław, Poland
    • "Superstring cosmologies" 8.01.99 - University of Warsaw, Warsaw, Poland
    • "Goedel universes in string theory" 29.01.99 - University of Napoli,Italy
    • "Problems with chaos in string cosmology" 4.04.99 - International Conference "The Chaotic Universe", University of Rome `La Sapienza', Italy
    • "Goedel universes in string theory" 18.03.99 - University of Wrocław, Poland
    • "Cosmological constant and supernovae type Ia observations" 19.03.99 - University of Wrocław, Poland
    • "Chaos in relativity and cosmology" 12.06.99 - 1st International Conference "Chaos in Dynamical Systems", Międzyzdroje, Poland
    • "Is supernovae data in favour of Friedmann cosmologies" 1.07.99 - Scuola Internazionale di Studi Avanzati (SISSA), Triest, Italy
    • "Dynamics of Mixmaster Horava-Witten Cosmology" 19.05.00 - 2nd International Conference "Chaos in Dynamical Systems", Międzyzdroje, Poland
    • "Supernovae observations versus standard cosmology" 16.06.00 - SALT Conference, Toruń, Poland
    • "Kasner Asymptotics of weakly and strongly coupled heterotic string theories" 4.07.00 - IX Marcel Grossmann Meeting, Rome, Italy
    • "Kasner asymptotics of Mixmaster Horava-Witten cosmologies" -29.07.00 - SSQFT2 Conference (D.V. Volkov Memorial), Kharkov, Ukraine.
    • "String Cosmologies" 27.02.2001 - University of Poznań, Poland
    • "Dynamics of Brane Universes" 20.05.2001 - 3rd International Conference "Chaos in Dynamical Systems", Międzyzdroje, Poland
    • "Superstring and Brane Cosmologies - part I and II" 2.07.2001 i 5.07.2001 - University of Rostock, Germany
    • "String cosmologies" 13.09.2001 - Bogoliubov Institute of Theoretical Physics, Ukrainian Academy of Sciences, Kiev, Ukraine
    • "String Cosmologies" 19.09.2001 - Insitute for Single Crystals, Ukrainian Academy of Sciences, Kharkov, Ukraine
    • "Dynamics of Brane Universes" 20.05.2001 - 3rd International Conference "Chaos in Dynamical Systems" Międzyzdroje, Poland
    • "Superstring and M-theory Cosmology" (parts 1 & 2) 3.07.01 and 5.07.01 - Institute of Physics, University of Rostock, Germany
    • "Dynamics and cosmic acceleration of brane universes" 18.03.2002 - German Physical Society Meeting, Leipzig, Germany
    • "Dynamics of Friedmann-Randall-Sundrum brane universes" 7.05.2002, Institute of Physics, University of Rostock, Germany
    • "Dynamics and cosmic acceleration of brane universes" 26.05.2002 - 4th International Conference "Chaos in Dynamical Systems" Międzyzdroje, Poland
    • "Is supernovae data in favour of isotropic cosmologies?" 2.07.2002, Institute of Physics, University of Rostock, Germany
    • "Brane universes tested by supernovae" 17.09.2002 - "The Relativistic Universe" Institute of Cosmology, University of Portsmouth, UK
    • "Phantom cosmologies" 31.10.2003 - University of Rostock, Germany
    • "Variable Gravitational Constant Theories" Graduiertenkolleg of University of Rostock Workshop Międzyzdroje, Poland, 21.07.2004
    • "Introduction to superstring and M-theory motivated cosmologies" - International School "Hot Points in Astrophysics and Cosmology", Dubna, Russia,
      2.08.2004
    • "Conformal relativity versus Brans-Dicke and superstring cosmologies"- International School "Hot Points in Astrophysics and Cosmology", Dubna, Russia, 3.08.2004
    • "Phantom cosmologies and more exotics in cosmology" - Department of Physics and Astronomy, University of Glasgow, 16.08.2004
    • "Statefinders, higer-order energy conditions and sudden future singularities" - Institute of Theoretical Physics, University of Cologne,
      Germany, 23.05.2005.
    • "Future state of the Universe" - "Pomeranian Workshop in Fundamental Cosmology", Pobierowo, Poland, 05.09.2005.
    • "Supernovae observations and the future of the universe - Polish Physical Society Colloqium, Lodz, Poland, 14.11.2005.
    • ``Scalar-tensor theories and the variability of the physical ``constants'', Institute of Physics, University of Szczecin, 19.04.2006.
    • ``Phantom and the Future of the Universe'' - Workshop ``Particle Physics and Cosmology'', University of Warsaw, 02.05.2006.
    • ``A Big-Rip (Phantom) Scenario and the Exotic Future of the Universe'', CosmoPlMeeting2006, Copernicus University, Toru\'n, 19.05.2006.
    • ``Phantom Inflation and an Exotic Future of the Universe'', 22nd IAP Colloquium, Paris, 27.06.2006.
    • ``Phantom Dark Energy and its Cosmological Consequences'', Eleventh Marcel Grossmann Meeting, Berlin, 25.07.2006.
    • ``Big-Rip, Sudden Future and other Exotic Singularities in the Universe'', ``Eleventh Marcel Grossmann Meeting, Berlin, 24.07.2006.
    • ``Phantom and phantom-related exotic singularity models of the Universe'' Montpellier06 Cosmology Workshop, Montpellier, France,
      24.11.2006.