Thermal Effects in Ising Cosmology

Author:

Irges Nikos1ORCID,Kalogirou Antonis1ORCID,Koutroulis Fotis2ORCID

Affiliation:

1. Department of Physics, School of Applied Mathematical and Physical Sciences, National Technical University of Athens, Zografou Campus, GR-15780 Athens, Greece

2. Institute of Theoretical Physics, Faculty of Physics, University of Warsaw, Pasteura 5, PL 02-093 Warsaw, Poland

Abstract

We consider a real scalar field in de Sitter background and compute its thermal propagators. We propose that in a dS/CFT context, nontrivial thermal effects as seen by an ‘out’ observer can be encoded in the anomalous dimensions of the d=3 Ising model. One of these anomalous dimensions, the critical exponent η, completely fixes a number of cosmological observables, which we compute.

Funder

Norwegian Financial Mechanism

Publisher

MDPI AG

Subject

General Physics and Astronomy

Reference26 articles.

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