Hardy, Edward ORCID: 0000-0003-3263-6575
(2017)
Non-perturbative reheating and Nnaturalness.
JOURNAL OF HIGH ENERGY PHYSICS, 2017 (11).
125-.
Abstract
We study models in which reheating happens only through non-perturbative processes. The energy transferred can be exponentially suppressed unless the inflaton is coupled to a particle with a parametrically small mass. Additionally, in some models a light scalar with a negative mass squared parameter leads to much more efficient reheating than one with a positive mass squared of the same magnitude. If a theory contains many sectors similar to the Standard Model coupled to the inflaton via their Higgses, such dynamics can realise the Nnaturalness solution to the hierarchy problem. A sector containing a light Higgs with a non-zero vacuum expectation value is dominantly reheated and there is little energy transferred to the other sectors, consistent with cosmological constraints. The inflaton must decouple from other particles and have a flat potential at large field values, in which case the visible sector UV cutoff can be raised to 10 TeV in a simple model.
Item Type: | Article |
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Additional Information: | 22 pages, 4 figures |
Uncontrolled Keywords: | Beyond Standard Model, Cosmology of Theories beyond the SM |
Depositing User: | Symplectic Admin |
Date Deposited: | 30 Nov 2017 14:35 |
Last Modified: | 15 Mar 2024 13:35 |
DOI: | 10.1007/JHEP11(2017)125 |
Open Access URL: | https://link.springer.com/article/10.1007/JHEP11(2... |
Related URLs: | |
URI: | https://livrepository.liverpool.ac.uk/id/eprint/3013217 |