Running nonminimal inflation with stabilized inflaton potential
Abstract
In the context of the Higgs model involving gauge and Yukawa interactions with the spontaneous gauge symmetry breaking, we consider λφ4 inflation with non minimal gravitational coupling, where the Higgs field is identified as the inflaton. Since the inflaton quartic coupling is very small, once quantum corrections through the gauge and Yukawa interactions are taken into account, the inflaton effective potential most likely becomes unstable. Furthermore, in order to avoid this problem, we need to impose stability conditions on the effective inflaton potential, which lead to not only nontrivial relations amongst the particle mass spectrum of the model, but also correlations between the inflationary predictions and the mass spectrum. For reasons of concrete discussion, we investigate the minimal B  L extension of the standard model with identification of the B  L Higgs field as the inflaton. The stability conditions for the inflaton effective potential fix the mass ratio amongst the B  L gauge boson, the righthanded neutrinos and the inflaton. This mass ratio also correlates with the inflationary predictions. So, if the B  L gauge boson and the righthanded neutrinos are discovered in the future, their observed mass ratio provides constraints on the inflationary predictions.
 Authors:

 Univ. of Alabama, Tuscaloosa, AL (United States). Dept. of Physics and Astronomy
 Publication Date:
 Research Org.:
 Univ. of Alabama, Tuscaloosa, AL (United States)
 Sponsoring Org.:
 USDOE Office of Science (SC), High Energy Physics (HEP) (SC25)
 OSTI Identifier:
 1365620
 Grant/Contract Number:
 SC0013680
 Resource Type:
 Accepted Manuscript
 Journal Name:
 European Physical Journal. C, Particles and Fields
 Additional Journal Information:
 Journal Volume: 77; Journal Issue: 4; Journal ID: ISSN 14346044
 Publisher:
 Springer
 Country of Publication:
 United States
 Language:
 English
 Subject:
 72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
Citation Formats
Okada, Nobuchika, and Raut, Digesh. Running nonminimal inflation with stabilized inflaton potential. United States: N. p., 2017.
Web. doi:10.1140/epjc/s1005201747994.
Okada, Nobuchika, & Raut, Digesh. Running nonminimal inflation with stabilized inflaton potential. United States. doi:10.1140/epjc/s1005201747994.
Okada, Nobuchika, and Raut, Digesh. Tue .
"Running nonminimal inflation with stabilized inflaton potential". United States. doi:10.1140/epjc/s1005201747994. https://www.osti.gov/servlets/purl/1365620.
@article{osti_1365620,
title = {Running nonminimal inflation with stabilized inflaton potential},
author = {Okada, Nobuchika and Raut, Digesh},
abstractNote = {In the context of the Higgs model involving gauge and Yukawa interactions with the spontaneous gauge symmetry breaking, we consider λφ4 inflation with non minimal gravitational coupling, where the Higgs field is identified as the inflaton. Since the inflaton quartic coupling is very small, once quantum corrections through the gauge and Yukawa interactions are taken into account, the inflaton effective potential most likely becomes unstable. Furthermore, in order to avoid this problem, we need to impose stability conditions on the effective inflaton potential, which lead to not only nontrivial relations amongst the particle mass spectrum of the model, but also correlations between the inflationary predictions and the mass spectrum. For reasons of concrete discussion, we investigate the minimal B  L extension of the standard model with identification of the B  L Higgs field as the inflaton. The stability conditions for the inflaton effective potential fix the mass ratio amongst the B  L gauge boson, the righthanded neutrinos and the inflaton. This mass ratio also correlates with the inflationary predictions. So, if the B  L gauge boson and the righthanded neutrinos are discovered in the future, their observed mass ratio provides constraints on the inflationary predictions.},
doi = {10.1140/epjc/s1005201747994},
journal = {European Physical Journal. C, Particles and Fields},
number = 4,
volume = 77,
place = {United States},
year = {2017},
month = {4}
}
Web of Science
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