Abstract
We study the production of primordial circular (“V-mode”) polarization in axion inflation coupled to fermions and gauge fields, with special attention paid to (p)reheating. We construct the power spectrum of , and find a blue-tilted spectrum with index . This is independent of the dominant decay channel of the inflaton (direct fermion vs direct photon production).
- Received 20 April 2017
DOI:https://doi.org/10.1103/PhysRevD.96.063506
© 2017 American Physical Society
Physics Subject Headings (PhySH)
Gravitation, Cosmology & AstrophysicsParticles & Fields