Apocalypse soon
天体物理学
2009-11-07 v1 高能物理 - 唯象学
高能物理 - 理论
摘要
Based upon a simple vacuum Lagrangian, comprising cosmological and quadratic scalar field terms, a cosmological model is presented whose history is indistinguishable from that of an innocuous low-density cold dark matter (CDM) universe, but whose future is very much shorter. For sensible values of the deceleration parameter (0<q_0<1), its age is greater than 85% of the Hubble time, thus resolving the current version of the age crisis, which appears (appeared) to be that t_0 ~ H_0 while q_0 is significantly positive.
关键词
引用
@article{arxiv.astro-ph/0109380,
title = {Apocalypse soon},
author = {J. C. Jackson},
journal= {arXiv preprint arXiv:astro-ph/0109380},
year = {2009}
}
备注
This paper has not previously appeared on the e-Print archive. It is essentially a Quintessence model without eternal acceleration. Such models are now very popular in the context of string theory. 5 pages, 2 figures