Exact solutions in two-dimensional string cosmology with back reaction

Sukanta Bose; Sayan Kar

doi:10.1103/PhysRevD.56.R4444

Exact solutions in two-dimensional string cosmology with back reaction

高能物理 - 理论 2009-12-30 v2 广义相对论与量子宇宙学

作者: Sukanta Bose , Sayan Kar

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摘要

We present analytic cosmological solutions in a model of two-dimensional dilaton gravity with back reaction. One of these solutions exhibits a graceful exit from the inflationary to the FRW phase and is nonsingular everywhere. A duality related second solution is found to exist only in the ``pre-big-bang'' epoch and is singular at $\tau = 0$ . In either case back reaction is shown to play a crucial role in determining the specific nature of these geometries.

引用

@article{arxiv.hep-th/9705061,
  title  = {Exact solutions in two-dimensional string cosmology with back reaction},
  author = {Sukanta Bose and Sayan Kar},
  journal= {arXiv preprint arXiv:hep-th/9705061},
  year   = {2009}
}

备注

Shortened slightly, references added, to appear in Physical Review D (Rapid Communications). 16 pages, RevTex, 3 PostScript figures

Exact solutions in two-dimensional string cosmology with back reaction

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