FRW universe in the laboratory
General Relativity and Quantum Cosmology
2013-11-13 v3 High Energy Physics - Theory
Abstract
We consider an expanding relativistic fluid with spherical symmetry as a model for an analog FRW spacetime. In the framework of relativistic acoustic geometry we demonstrate how to mimic an arbitrary FRW spacetime with positive, zero or negative spatial curvature. In the Lagrangian description we show that a particular FRW spacetime is obtained by choosing the appropriate potential. We discuss several examples and in particular the analog de Sitter spacetime in the coordinate representation with positive and negative spatial curvature.
Keywords
Cite
@article{arxiv.1309.2833,
title = {FRW universe in the laboratory},
author = {Neven Bilic and Dijana Tolic},
journal= {arXiv preprint arXiv:1309.2833},
year = {2013}
}
Comments
21 pages, 2 figures, title changed, typos corrected, seven references added, a few clarifications and a comment on emergent gravity added, to appear in PRD