UV perturbations in brane gas cosmology
Abstract
We consider the effect of the ultraviolet (UV) or short wavelength modes on the background of brane gas cosmology. We find that the string matter sources are negligible in the UV and that the evolution is given primarily by the dilaton perturbation. We also find that the linear perturbations are well behaved and the predictions of brane gas cosmology are robust against the introduction of linear perturbations. In particular, we find that the stabilization of the extra dimensions (moduli) remains valid in the presence of dilaton and string perturbations.
- Publication:
-
Physical Review D
- Pub Date:
- July 2004
- DOI:
- 10.1103/PhysRevD.70.023516
- arXiv:
- arXiv:hep-th/0402015
- Bibcode:
- 2004PhRvD..70b3516W
- Keywords:
-
- 98.80.Cq;
- Particle-theory and field-theory models of the early Universe;
- Astrophysics;
- General Relativity and Quantum Cosmology;
- High Energy Physics - Phenomenology;
- High Energy Physics - Theory
- E-Print:
- 21 pages, 5 figures