Axion Bremsstrahlung
Astrophysics
2007-05-23 v1
Abstract
A new mechanism of cosmic axion production is proposed: axion bremsstrahlung from collisions of straight global strings. This effect is of the second order in the axion coupling constant, but the resulting cosmological estimate is likely to be of the same order as that corresponding to radiation from oscillating string loops. This may lead to a further restriction on the axion window.
Keywords
Cite
@article{arxiv.astro-ph/0310541,
title = {Axion Bremsstrahlung},
author = {Elena Melkumova and Dmitry V. Gal'Tsov and Richard Kerner},
journal= {arXiv preprint arXiv:astro-ph/0310541},
year = {2007}
}
Comments
talk given at the 15th Rencontres De Blois: Physical Cosmology: New Results In Cosmology And The Coherence Of The Standard Model (Blois 2003)