Cosmological Models in Two Spacetime Dimensions
General Relativity and Quantum Cosmology
2010-04-06 v2
Abstract
Various physical properties of cosmological models in (1+1) dimensions are investigated. We demonstrate how a hot big bang and a hot big crunch can arise in some models. In particular, we examine why particle horizons do not occur in matter and radiation models. We also discuss under what circumstances exponential inflation and matter/radiation decoupling can happen. Finally, without assuming any particular equation of state, we show that physical singularities can occur in both untilted and tilted universe models if certain assumptions are satisfied, similar to the (3+1)-dimensional cases.
Cite
@article{arxiv.gr-qc/9210015,
title = {Cosmological Models in Two Spacetime Dimensions},
author = {K. C. K. Chan and R. B. Mann},
journal= {arXiv preprint arXiv:gr-qc/9210015},
year = {2010}
}
Comments
22 pgs., 2 figs. (available on request) (revised version contains `paper.tex' macro file which was omitted in earlier version)