Universal Approach to Cosmological Singularities in Two Dimensional Dilaton Gravity
General Relativity and Quantum Cosmology
2010-01-06 v1
Abstract
We show that in a large class of two dimensional models with conformal matter fields, the semiclassical cosmological solutions have a weak coupling singularity if the classical matter content is below a certain threshold. This threshold and the approach to the singularity are model-independent. When the matter fields are not conformally invariant, the singularity persists if the quantum state is the vacuum near the singularity, and could dissappear for other quantum states.
Cite
@article{arxiv.gr-qc/9404035,
title = {Universal Approach to Cosmological Singularities in Two Dimensional Dilaton Gravity},
author = {G. N. Martin and F. D. Mazzitelli},
journal= {arXiv preprint arXiv:gr-qc/9404035},
year = {2010}
}
Comments
12 pages (revtex)