Linear Cosmological Perturbations in D-brane Gases
arXiv:hep-th/0502133 · doi:10.1088/1126-6708/2005/03/003
Abstract
We consider linear cosmological perturbations on the background of a D-brane gas in which the compact dimensions and the dilaton are stabilized. We focus on long wavelength fluctuations and find that there are no instabilities. In particular, the perturbation of the internal space performs damped oscillations and decays in time. Therefore, the stabilization mechanism based on D-brane gases in string theory remains valid in the presence of linearized inhomogeneities.
11 pages, v2: minor changes, references added, to appear in JHEP
Cited by in corpus (5)
- String Gas Cosmology
- Acceleration of the Universe via f(R) Gravities and The Stability of Extra Dimensions
- Brane Gases and Stabilization of Shape Moduli with Momentum and Winding Stress
- Stabilization of Extra Dimensions and The Dimensionality of the Observed Space
- T and S dualities and The cosmological evolution of the dilaton and the scale factors