Cosmological perturbations from statistical thermal fluctuations
Cosmology and Nongalactic Astrophysics
2013-08-09 v2 General Relativity and Quantum Cosmology
High Energy Physics - Theory
Abstract
Cosmological perturbations due to statistical thermal fluctuations in a single fluid characterized by an arbitrary equation of state are computed. Formulas to predict the scalar and tensor perturbation spectra and nongaussianity parameters at a given temperature are derived. These results are relevant to any cosmological scenario where cosmic structures may have been seeded thermally instead of originating purely from quantum vacuum fluctuations.
Cite
@article{arxiv.1302.6463,
title = {Cosmological perturbations from statistical thermal fluctuations},
author = {Tirthabir Biswas and Robert Brandenberger and Tomi Koivisto and Anupam Mazumdar},
journal= {arXiv preprint arXiv:1302.6463},
year = {2013}
}
Comments
13 pages, no figures. v2: references added