Work

Cosmological perturbations from statistical thermal fluctuations

Year: 2013

Type: article

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 non-Gaussianity parameters at a given temperature are derived. These results are relevant to cosmological scenarios, such as cyclic or emergent universes, where cosmic structures may have been seeded thermally instead of originating purely from quantum vacuum fluctuations.

Source: Physical review. D. Particles, fields, gravitation, and cosmology/Physical review. D. Particles and fields

DOI: 10.1103/physrevd.88.023517

Authors: Tirthabir Biswas, Robert Brandenberger, Tomi Koivisto, Anupam Mazumdar

Institution: Loyola University New Orleans

Language: English

Topic: Cosmology and Gravitation Theories

Subfield: Astronomy and Astrophysics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: green

Funder: Science and Technology Facilities Council

Awards: G2117561390, G6566089108