Inflection-point Higgs inflation
Abstract
Inflection-point inflation is an interesting possibility to realize a successful slow-roll inflation when inflation is driven by a single scalar field with its initial value below the Planck mass (ΦI≲MPl). In order for a renormalization group (RG) improved effective λΦ4 potential to develop an inflection-point, the quartic coupling λ(Φ) must exhibit a minimum with an almost vanishing value in its RG evolution, namely λ(ΦI)≃0 and βλ(ΦI)≃0, where βλ is the beta-function of the quartic coupling. As an example, we consider the minimal gauged B-L extended Standard Model at the TeV scale, where we identify the B-L Higgs field as the inflaton field. For a successful inflection-point inflation, which is consistent with the current cosmological observations, the mass ratios among the Z' gauge boson, the right-handed neutrinos and the B-L Higgs boson are fixed. Our scenario can be tested in the future collider experiments such as the High-Luminosity LHC and the SHiP experiments. Finally, in addition, the inflection-point inflation provides a unique prediction for the running of the spectral index α≃-2.7×10-3($$60\atop{N}$$)2 (N is the e-folding number), which can be tested in the near future.
- 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)
- OSTI Identifier:
- 1365633
- Alternate Identifier(s):
- OSTI ID: 1345279
- Grant/Contract Number:
- SC0013680
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Physical Review D
- Additional Journal Information:
- Journal Volume: 95; Journal Issue: 3; Journal ID: ISSN 2470-0010
- Publisher:
- American Physical Society (APS)
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
Citation Formats
Okada, Nobuchika, and Raut, Digesh. Inflection-point B-L Higgs inflation. United States: N. p., 2017.
Web. doi:10.1103/PhysRevD.95.035035.
Okada, Nobuchika, & Raut, Digesh. Inflection-point B-L Higgs inflation. United States. https://doi.org/10.1103/PhysRevD.95.035035
Okada, Nobuchika, and Raut, Digesh. Tue .
"Inflection-point B-L Higgs inflation". United States. https://doi.org/10.1103/PhysRevD.95.035035. https://www.osti.gov/servlets/purl/1365633.
@article{osti_1365633,
title = {Inflection-point B-L Higgs inflation},
author = {Okada, Nobuchika and Raut, Digesh},
abstractNote = {Inflection-point inflation is an interesting possibility to realize a successful slow-roll inflation when inflation is driven by a single scalar field with its initial value below the Planck mass (ΦI≲MPl). In order for a renormalization group (RG) improved effective λΦ4 potential to develop an inflection-point, the quartic coupling λ(Φ) must exhibit a minimum with an almost vanishing value in its RG evolution, namely λ(ΦI)≃0 and βλ(ΦI)≃0, where βλ is the beta-function of the quartic coupling. As an example, we consider the minimal gauged B-L extended Standard Model at the TeV scale, where we identify the B-L Higgs field as the inflaton field. For a successful inflection-point inflation, which is consistent with the current cosmological observations, the mass ratios among the Z' gauge boson, the right-handed neutrinos and the B-L Higgs boson are fixed. Our scenario can be tested in the future collider experiments such as the High-Luminosity LHC and the SHiP experiments. Finally, in addition, the inflection-point inflation provides a unique prediction for the running of the spectral index α≃-2.7×10-3($60\atop{N}$)2 (N is the e-folding number), which can be tested in the near future.},
doi = {10.1103/PhysRevD.95.035035},
journal = {Physical Review D},
number = 3,
volume = 95,
place = {United States},
year = {Tue Feb 28 00:00:00 EST 2017},
month = {Tue Feb 28 00:00:00 EST 2017}
}
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