Dynamical Behavior of dilaton in de Sitter space
arXiv:hep-th/0204083 · doi:10.1016/S0370-2693(02)01880-4
Abstract
We study the dynamical behavior of the dilaton in the background of three-dimensional Kerr-de Sitter space which is inspired from the low-energy string effective action. The perturbation analysis around the cosmological horizon of Kerr-de Sitter space reveals a mixing between the dilaton and other fields. Introducing a gauge (dilaton gauge), we can disentangle this mixing completely and obtain one decoupled dilaton equation. However it turns out that this belongs to the tachyon. The stability of de Sitter solution with J=0 is discussed. Finally we compute the dilaton absorption cross section to extract information on the cosmological horizon of de Sitter space.
11 pages, reference added and a version to appear in PLB
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Cited by in corpus (5)
- Quasinormal modes of d-dimensional spherical black holes with a near extreme cosmological constant
- (Anti-) de Sitter Black Holes in higher derivative gravity and dual Conformal Field Theories
- Support of dS/CFT correspondence from space-time perturbations
- Difference between AdS and dS spaces: wave equation approach
- No absorption in de Sitter space