String Gas Cosmology

Simple item page
dc.creatorBattefeld, Thorsten
dc.creatorWatson, Scott
dc.date2005-10-03
dc.date2006-02-17
dc.date.accessioned2026-07-07T11:27:18Z
dc.date.available2026-07-07T11:27:18Z
dc.descriptionWe present a critical review and summary of String Gas Cosmology. We include a pedagogical derivation of the effective action starting from string theory, emphasizing the necessary approximations that must be invoked. Working in the effective theory, we demonstrate that at late-times it is not possible to stabilize the extra dimensions by a gas of massive string winding modes. We then consider additional string gases that contain so-called enhanced symmetry states. These string gases are very heavy initially, but drive the moduli to locations that minimize the energy and pressure of the gas. We consider both classical and quantum gas dynamics, where in the former the validity of the theory is questionable and some fine-tuning is required, but in the latter we find a consistent and promising stabilization mechanism that is valid at late-times. In addition, we find that string gases provide a framework to explore dark matter, presenting alternatives to $Λ$CDM as recently considered by Gubser and Peebles. We also discuss quantum trapping with string gases as a method for including dynamics on the string landscape.
dc.description55 pages, 1 figure, minor corrections, version to appear in Reviews of Modern Physics
dc.identifierhttps://arxiv.org/abs/hep-th/0510022
dc.identifierhttp://arxiv.org/abs/hep-th/0510022
dc.identifierRev.Mod.Phys.78:435-454,2006
dc.identifierdoi:10.1103/RevModPhys.78.435
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/196107
dc.subjectHigh Energy Physics - Theory
dc.subjectAstrophysics
dc.subjectGeneral Relativity and Quantum Cosmology
dc.subjectHigh Energy Physics - Phenomenology
dc.titleString Gas Cosmology
dc.typetext

Files

Collections

arXiv