Higgsed Chromo-Natural Inflation

被引：71
作者：
Adshead, Peter [1 ]
Martinec, Emil [2 ,3 ]
Sfakianakis, Evangelos I. [1 ]
Wyman, Mark [4 ]
机构：
[1] Univ Illinois, Dept Phys, 1110 West Green St, Urbana, IL 61801 USA
[2] Univ Chicago, Enrico Fermi Inst, 5640 S Ellis Ave, Chicago, IL 60637 USA
[3] Univ Chicago, Dept Phys, 5640 S Ellis Ave, Chicago, IL 60637 USA
[4] PDT Partners, 1745 Broadway,25th Floor, New York, NY 10019 USA
来源：
JOURNAL OF HIGH ENERGY PHYSICS | 2016年 / 12期
基金：
欧洲研究理事会;
关键词：
Chern-Simons Theories; Spontaneous Symmetry Breaking; Cosmology of Theories beyond the SM; GAUGE-FLATION; SYMMETRY; CONSERVATION; FLATNESS; UNIVERSE; HORIZON;
D O I：
10.1007/JHEP12(2016)137
中图分类号：
O412 [相对论、场论]; O572.2 [粒子物理学];
学科分类号：
摘要：
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 similar to 10(-3)) can be produced while the evolution of all background fields is sub-Planckian. The gravitational wave spectrum is amplified via linear mixing with the gauge field fluctuations, and its amplitude is not simply set by the Hubble rate during inflation. This allows observable gravitational waves to be produced for an inflationary energy scale below the GUT scale. The tilt of the resulting gravitational wave spectrum can be either blue or red.
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页数：42
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