Please use this identifier to cite or link to this item:
http://hdl.handle.net/2445/131788
Title: | Photon propagation in a cold axion background with and without magnetic field |
Author: | Espriu, D. (Domènec) Renau Cerrillo, Albert |
Keywords: | Física de partícules Experiments Fotons Particle physics Experiments Photons |
Issue Date: | 18-Jan-2012 |
Publisher: | American Physical Society |
Abstract: | A cold relic axion condensate resulting from vacuum misalignment in the early Universe oscillates with a frequency m , where m is the axion mass. We determine the properties of photons propagating in a simplified version of such a background where the sinusoidal variation is replaced by a square wave profile. We prove that previous results, which indicated that charged particles moving fast in such a background radiate (originally derived assuming that all momenta involved were much larger than m ), hold for long wavelengths, too. We also analyze in detail how the introduction of a magnetic field changes the properties of photon propagation in such a medium. We briefly comment on possible astrophysical implications of these results. |
Note: | Reproducció del document publicat a: https://doi.org/10.1103/PhysRevD.85.025010 |
It is part of: | Physical Review D, 2012, vol. 85, num. 2, p. 025010 |
URI: | http://hdl.handle.net/2445/131788 |
Related resource: | https://doi.org/10.1103/PhysRevD.85.025010 |
ISSN: | 1550-7998 |
Appears in Collections: | Articles publicats en revistes (Física Quàntica i Astrofísica) |
Files in This Item:
File | Description | Size | Format | |
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619688.pdf | 368.31 kB | Adobe PDF | View/Open |
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