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Title: Higgsed Chromo-Natural Inflation

Journal Article · · Journal of High Energy Physics (Online)
 [1];  [2];  [1];  [3]
  1. Univ. of Illinois, Urbana-Champaign, IL (United States)
  2. Univ. of Chicago, IL (United States)
  3. PDT Partners, New York, NY (United States)

We demonstrate that Chromo-Natural Inflation can be made consistent with observational data if the SU(2) gauge symmetry is spontaneously broken. Working in the Stueckelberg limit, we show that isocurvature is negligible, and the resulting adiabatic fluctuations can match current observational constraints. Observable levels of chirally-polarized gravitational radiation (r ~ 10-3) can be produced while the evolution of all background fields is sub-Planckian. The gravitational wave spectrum is ampli ed via linear mixing with the gauge field fluctuations, and its amplitude is not simply set by the Hubble rate during in inflation. This allows observable gravitational waves to be produced for an in inflationary energy scale below the GUT scale. The tilt of the resulting gravitational wave spectrum can be either blue or red.

Research Organization:
Univ. of Chicago, IL (United States); Univ. of Illinois at Urbana-Champaign, IL (United States)
Sponsoring Organization:
USDOE Office of Science (SC)
Grant/Contract Number:
FG02-90ER40560; SC0009924; SC0015655
OSTI ID:
1368034
Journal Information:
Journal of High Energy Physics (Online), Vol. 2016, Issue 12; ISSN 1029-8479
Publisher:
Springer BerlinCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 55 works
Citation information provided by
Web of Science

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Cited By (9)

Arbitrarily coupled p  -forms in cosmological backgrounds journal January 2020
Tensor non-gaussianities from non-minimal coupling to the inflaton journal February 2019
Stability conditions in the generalized S U ( 2 ) Proca theory journal October 2019
The Weak Gravity Conjecture and emergence from an ultraviolet cutoff journal April 2018
Chiral anomaly and Schwinger effect in non-abelian gauge theories text January 2019
The Different Regimes of Axion Gauge Field Inflation text January 2019
The Different Regimes of Axion Gauge Field Inflation journal September 2019
Chiral Anomaly and Schwinger Effect in Non-Abelian Gauge Theories text January 2018
Arbitrarily coupled $p-$forms in cosmological backgrounds text January 2018

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