Conformal symmetry and deflationary gas universe
General Relativity and Quantum Cosmology
2015-06-25 v1 Astrophysics
High Energy Physics - Phenomenology
Abstract
We describe the ``deflationary'' evolution from an initial de Sitter phase to a subsequent Friedmann-Lema\^{\i}tre-Robertson-Walker (FLRW) period as a specific non-equilibrium configuration of a self-interacting gas. The transition dynamics corresponds to a conformal, timelike symmetry of an ``optical'' metric, characterized by a refraction index of the cosmic medium which continously decreases from a very large initial value to unity in the FLRW phase.
Cite
@article{arxiv.gr-qc/0103022,
title = {Conformal symmetry and deflationary gas universe},
author = {Winfried Zimdahl and Alexander B. Balakin},
journal= {arXiv preprint arXiv:gr-qc/0103022},
year = {2015}
}
Comments
10 pages, to appear in "Exact Solutions and Scalar Fields in Gravity: Recent Developments", ed. by A. Macias, J. Cervantes-Cota, and C. L\"ammerzahl, Kluwer Academic Publishers 2001