Holography for the very early universe and the classic puzzles of hot big bang cosmology

Nastate, Horatiu and Skenderis, Kostas (2020) Holography for the very early universe and the classic puzzles of hot big bang cosmology. Physical Review D, 101 (2), 1-7, [021901(R)]. (doi:10.1103/PhysRevD.101.021901).

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Abstract

We show that standard puzzles of hot big bang cosmology that motivated the introduction of cosmological inflation, such as the smoothness and horizon problem, the flatness problem, and the relic problem are also solved by holographic models for very early universe based on perturbative three dimensional QFT. In the holographic setup, cosmic evolution is mapped to inverse renormalization group (RG) flow of the dual QFT, and the resolution of the puzzles relies on properties of the RG flow.

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Accepted/In Press date: 21 December 2019

e-pub ahead of print date: 21 January 2020

Published date: 21 January 2020

Additional Information: Publisher Copyright: © 2020 authors. Published by the American Physical Society. Published by the American Physical Society under the terms of the "https://creativecommons.org/licenses/by/4.0/" Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article's title, journal citation, and DOI.