Document Type
Article
Publication Date
6-1-2015
Publication Title
Physical Review D - Particles, Fields, Gravitation, and Cosmology
Department
Department of Physics and Astronomy
Abstract
A cosmological gauge field with isotropic stress-energy introduces parity violation into the behavior of gravitational waves. We show that a primordial spectrum of inflationary gravitational waves develops a preferred handedness, left or right circularly polarized, depending on the abundance and coupling of the gauge field during the radiation era. A modest abundance of the gauge field would induce parity-violating correlations of the cosmic microwave background temperature and polarization patterns that could be detected by current and future experiments.
DOI
10.1103/PhysRevD.91.123501
Dartmouth Digital Commons Citation
Bielefeld, Jannis and Caldwell, Robert R., "Chiral Imprint of a Cosmic Gauge Field on Primordial Gravitational Waves" (2015). Dartmouth Scholarship. 1958.
https://digitalcommons.dartmouth.edu/facoa/1958
