Liouville Cosmology
Abstract
Liouville string theory is a natural framework for discussing the non-equilibrium evolution of the Universe. It enables non-critical strings to be treated in mathematically consistent manner, in which target time is identified with a world-sheet renormalization-group scale parameter, preserving target-space general coordinate invariance and the existence of an S-matrix. We review our proposals for a unified treatment of inflation and the current acceleration of the Universe. We link the current acceleration of the Universe with the value of the string coupling. In such a scenario, the dilaton plays an essential background role, driving the acceleration of the Universe during the present era after decoupling as a constant during inflation.
Keywords
Cite
@article{arxiv.gr-qc/0502119,
title = {Liouville Cosmology},
author = {John Ellis and N. E. Mavromatos and D. V. Nanopoulos},
journal= {arXiv preprint arXiv:gr-qc/0502119},
year = {2007}
}
Comments
23 pages latex, 2 eps figures, contribution to the proceedings of the Dark 2004 conference, College Station, October 2004