Reheating the Standard Model from a hidden sector

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http://hdl.handle.net/10138/183647

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Tenkanen , T & Vaskonen , V 2016 , ' Reheating the Standard Model from a hidden sector ' Physical Review D , vol. 94 , no. 8 , 083516 . DOI: 10.1103/PhysRevD.94.083516

Title: Reheating the Standard Model from a hidden sector
Author: Tenkanen, Tommi; Vaskonen, Ville
Contributor: University of Helsinki, Helsinki Institute of Physics
Date: 2016-10-14
Language: eng
Number of pages: 8
Belongs to series: Physical Review D
ISSN: 2470-0010
URI: http://hdl.handle.net/10138/183647
Abstract: We consider a scenario where the inflaton decays to a hidden sector thermally decoupled from the visible Standard Model sector. A tiny portal coupling between the hidden and the visible sectors later heats the visible sector so that the Standard Model degrees of freedom come to dominate the energy density of the Universe before big bang nucleosynthesis. We find that this scenario is viable, although obtaining the correct dark matter abundance and retaining successful big bang nucleosynthesis is not obvious. We also show that the isocurvature perturbations constituted by a primordial Higgs condensate are not problematic for the viability of the scenario.
Subject: DARK-MATTER
ELECTROWEAK VACUUM
UNIVERSE
HIGGS
INFLATION
STABILITY
SCALAR
114 Physical sciences
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