Photon production of axionic cold dark matter
Physical Review D - Particles, Fields, Gravitation and Cosmology, ISSN: 1550-2368, Vol: 61, Issue: 8
2000
- 17Citations
- 1Captures
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Example: if you select the 1-year option for an article published in 2019 and a metric category shows 90%, that means that the article or review is performing better than 90% of the other articles/reviews published in that journal in 2019. If you select the 3-year option for the same article published in 2019 and the metric category shows 90%, that means that the article or review is performing better than 90% of the other articles/reviews published in that journal in 2019, 2018 and 2017.
Citation Benchmarking is provided by Scopus and SciVal and is different from the metrics context provided by PlumX Metrics.
Article Description
Using the nonequilibrium quantum field theory, photon production from the coherently oscillating axion field in a flat Robertson-Walker cosmology is reexamined. First neglecting the Debye screening of the baryon plasma to photons, we find that the axions will dissipate into photons via spinodal instability in addition to parametric resonance. As a result of the pseudoscalar nature of the axion-photon coupling, we observe a circular polarization asymmetry in the photons produced. However, these effects are suppressed to an insignificant level in the expanding universe. We then briefly discuss a systematic way of including the plasma effect which can further suppress the photon production. We note that the formalism of the problem can be applied to any pseudoscalar field coupled to a photon in a thermal background in a general curved spacetime. © 2000 The American Physical Society.
Bibliographic Details
http://www.scopus.com/inward/record.url?partnerID=HzOxMe3b&scp=17044424085&origin=inward; http://dx.doi.org/10.1103/physrevd.61.085003; https://link.aps.org/doi/10.1103/PhysRevD.61.085003; http://harvest.aps.org/v2/journals/articles/10.1103/PhysRevD.61.085003/fulltext; http://link.aps.org/article/10.1103/PhysRevD.61.085003
American Physical Society (APS)
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