The supercooled universe
Baratella, Pietro (Institut de Física d'Altes Energies)
Pomarol Clotet, Àlex (Universitat Autònoma de Barcelona. Departament de Física)
Rompineve, Fabrizio (Institut de Física d'Altes Energies)

Date:	2019
Abstract:	Strongly-coupled theories at the TeV can naturally drive a long period of supercooling in the early universe. Trapped into the deconfined phase, the universe could inflate and cool down till the temperature reaches the QCD strong scale. We show how at these low temperatures QCD effects are important and could trigger the exit from the long supercooling era. We also study the implications on relic abundances. In particular, the latent heat released at the end of supercooling could be the reason for the similarities between dark matter and baryon energy densities. The axion abundance could also be significantly affected, allowing for larger values of the axion decay constant. Finally, we discuss how a long supercooling epoch could lead to an enhanced gravitational wave signal.
Grants:	Ministerio de Ciencia e Innovación SEV-2016-0588 Ministerio de Ciencia e Innovación FPA2017-88915-P Ministerio de Ciencia e Innovación FPA2014-55613-P Agència de Gestió d'Ajuts Universitaris i de Recerca 2017/SGR-1069
Rights:	Aquest document està subjecte a una llicència d'ús Creative Commons. Es permet la reproducció total o parcial, la distribució, la comunicació pública de l'obra i la creació d'obres derivades, fins i tot amb finalitats comercials, sempre i quan es reconegui l'autoria de l'obra original.
Language:	Anglès
Document:	Article ; recerca ; Versió publicada
Subject:	Cosmology of Theories beyond the SM ; Beyond Standard Model ; Technicolor and Composite Models
Published in:	Journal of high energy physics, Vol. 2019, Issue 3 (March 2019) , art. 100, ISSN 1029-8479

DOI: 10.1007/JHEP03(2019)100

34 p, 921.3 KB

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Research literature > UAB research groups literature > Research Centres and Groups (research output) > Experimental sciences > Institut de Física d’Altes Energies (IFAE)
Articles > Research articles
Articles > Published articles