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Title: The problem with false vacuum Higgs inflation

Abstract

We investigate the possibility of using the only known fundamental scalar, the Higgs, as an inflaton with minimal coupling to gravity. The peculiar appearance of a plateau or a false vacuum in the renormalised effective scalar potential suggests that the Higgs might drive inflation. For the case of a false vacuum we use an additional singlet scalar field, motivated by the strong CP problem, and its coupling to the Higgs to lift the barrier allowing for a graceful exit from inflation by mimicking hybrid inflation. We find that this scenario is incompatible with current measurements of the Higgs mass and the QCD coupling constant and conclude that the Higgs can only be the inflaton in more complicated scenarios.

Authors:
; ;  [1]
  1. Physics, Kings College London, Strand, London, WC2R 2LS (United Kingdom)
Publication Date:
OSTI Identifier:
22373508
Resource Type:
Journal Article
Journal Name:
Journal of Cosmology and Astroparticle Physics
Additional Journal Information:
Journal Volume: 2014; Journal Issue: 06; Other Information: Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 1475-7516
Country of Publication:
United States
Language:
English
Subject:
79 ASTROPHYSICS, COSMOLOGY AND ASTRONOMY; COSMOLOGICAL INFLATION; COUPLING CONSTANTS; GRAVITATION; HIGGS MODEL; MASS; POTENTIALS; QUANTUM CHROMODYNAMICS; SCALAR FIELDS

Citation Formats

Fairbairn, Malcolm, Grothaus, Philipp, and Hogan, Robert. The problem with false vacuum Higgs inflation. United States: N. p., 2014. Web. doi:10.1088/1475-7516/2014/06/039.
Fairbairn, Malcolm, Grothaus, Philipp, & Hogan, Robert. The problem with false vacuum Higgs inflation. United States. https://doi.org/10.1088/1475-7516/2014/06/039
Fairbairn, Malcolm, Grothaus, Philipp, and Hogan, Robert. Sun . "The problem with false vacuum Higgs inflation". United States. https://doi.org/10.1088/1475-7516/2014/06/039.
@article{osti_22373508,
title = {The problem with false vacuum Higgs inflation},
author = {Fairbairn, Malcolm and Grothaus, Philipp and Hogan, Robert},
abstractNote = {We investigate the possibility of using the only known fundamental scalar, the Higgs, as an inflaton with minimal coupling to gravity. The peculiar appearance of a plateau or a false vacuum in the renormalised effective scalar potential suggests that the Higgs might drive inflation. For the case of a false vacuum we use an additional singlet scalar field, motivated by the strong CP problem, and its coupling to the Higgs to lift the barrier allowing for a graceful exit from inflation by mimicking hybrid inflation. We find that this scenario is incompatible with current measurements of the Higgs mass and the QCD coupling constant and conclude that the Higgs can only be the inflaton in more complicated scenarios.},
doi = {10.1088/1475-7516/2014/06/039},
url = {https://www.osti.gov/biblio/22373508}, journal = {Journal of Cosmology and Astroparticle Physics},
issn = {1475-7516},
number = 06,
volume = 2014,
place = {United States},
year = {2014},
month = {6}
}