Dissipative Liouville Cosmology: A Case Study

TL;DR

This paper explores a cosmological model derived from non-critical string theory with dissipative effects, focusing on how off-equilibrium dynamics and dilaton fields influence the universe's evolution and relic densities.

Contribution

It introduces a novel dissipative Liouville cosmology framework based on non-critical string theory, highlighting effects of off-shell terms on cosmological evolution.

Findings

Cosmological parameters evolve differently due to dissipative effects.

Dilaton and off-shell Liouville terms impact relic densities.

Model describes universe evolution post-catastrophic events.

Abstract

We consider solutions of the cosmological equations pertaining to a dissipative, dilaton-driven off-equilibrium Liouville Cosmological model, which may describe the effective field theoretic limit of a non-critical string model of the Universe. The non-criticality may be the result of an early-era catastrophic cosmic event, such as a big-bang, brane-world collision etc. The evolution of the various cosmological parameters of the model are obtained, and the effects of the dilaton and off-shell Liouville terms, including briefly those on relic densities, which distinguish the model from conventional cosmologies, are emphasised.