Closed Inhomogeneous String Cosmologies
高能物理 - 理论
2009-10-30 v2 广义相对论与量子宇宙学
摘要
We present a general algorithm which permits to construct solutions in string cosmology for heterotic and type-IIB superstrings in four dimensions. Using a chain of transformations applied in sequence: conformal, T-duality and SL(2,R) rotations, along with the usual generating techniques associated to Geroch transformations in Einstein frame, we obtain solutions with all relevant low-energy remnants of the string theory. To exemplify our algorithm we present an inhomogeneous string cosmology with S^3 topology of spatial sections, discuss some properties of the solution and point out some subtleties involved in the concept of homogeneity and isotropy in string cosmology.
引用
@article{arxiv.hep-th/9704173,
title = {Closed Inhomogeneous String Cosmologies},
author = {A. Feinstein and Ruth Lazkoz and M. A. Vazquez-Mozo},
journal= {arXiv preprint arXiv:hep-th/9704173},
year = {2009}
}
备注
14 pages, TeX harvmac. Some misprints corrected and one reference added