- Supersymmetry and superstrings.
- String, brane, and M-theory cosmology.
- Superstring landscape.
- Quantum gravity and decoherence.
- Inflation and large-scale structure.
- Early universe.
- Dark energy. Supernovae. CMB.
- Variation of physical constants – theory.
- Variation of physical constants – experiment.
- The arrow of time.
- Anthropic principles.
- Many-world interpretation of quantum mechanics.
- Multiverse.