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Title: Tensor modes in pure natural inflation

Abstract

We study tensor modes in pure natural inflation, a recently-proposed inflationary model in which an axionic inflaton couples to pure Yang–Mills gauge fields. We find that the tensor-to-scalar ratio r is naturally bounded from below. This bound originates from the finiteness of the number of metastable branches of vacua in pure Yang–Mills theories. Details of the model can be probed by future cosmic microwave background experiments and improved lattice gauge theory calculations of the θ-angle dependence of the vacuum energy.

Authors:
ORCiD logo; ORCiD logo
Publication Date:
Research Org.:
Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
Sponsoring Org.:
USDOE Office of Science (SC), High Energy Physics (HEP) (SC-25)
OSTI Identifier:
1423905
Alternate Identifier(s):
OSTI ID: 1461997
Grant/Contract Number:  
AC02-05CH11231; 15K17634
Resource Type:
Published Article
Journal Name:
Physics Letters B
Additional Journal Information:
Journal Name: Physics Letters B Journal Volume: 780 Journal Issue: C; Journal ID: ISSN 0370-2693
Publisher:
Elsevier
Country of Publication:
Netherlands
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS

Citation Formats

Nomura, Yasunori, and Yamazaki, Masahito. Tensor modes in pure natural inflation. Netherlands: N. p., 2018. Web. doi:10.1016/j.physletb.2018.02.071.
Nomura, Yasunori, & Yamazaki, Masahito. Tensor modes in pure natural inflation. Netherlands. doi:10.1016/j.physletb.2018.02.071.
Nomura, Yasunori, and Yamazaki, Masahito. Tue . "Tensor modes in pure natural inflation". Netherlands. doi:10.1016/j.physletb.2018.02.071.
@article{osti_1423905,
title = {Tensor modes in pure natural inflation},
author = {Nomura, Yasunori and Yamazaki, Masahito},
abstractNote = {We study tensor modes in pure natural inflation, a recently-proposed inflationary model in which an axionic inflaton couples to pure Yang–Mills gauge fields. We find that the tensor-to-scalar ratio r is naturally bounded from below. This bound originates from the finiteness of the number of metastable branches of vacua in pure Yang–Mills theories. Details of the model can be probed by future cosmic microwave background experiments and improved lattice gauge theory calculations of the θ-angle dependence of the vacuum energy.},
doi = {10.1016/j.physletb.2018.02.071},
journal = {Physics Letters B},
number = C,
volume = 780,
place = {Netherlands},
year = {2018},
month = {5}
}

Journal Article:
Free Publicly Available Full Text
Publisher's Version of Record
DOI: 10.1016/j.physletb.2018.02.071

Citation Metrics:
Cited by: 3 works
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Works referencing / citing this record:

Oscillons and dark matter
journal, February 2020

  • Ollé, Jan; Pujolàs, Oriol; Rompineve, Fabrizio
  • Journal of Cosmology and Astroparticle Physics, Vol. 2020, Issue 02
  • DOI: 10.1088/1475-7516/2020/02/006