Photon radiation in hot nuclear matter by means of chiral anomalies

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2019-06-24
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American Physical Society
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Physics and Astronomy
Abstract
A new mechanism of photon emission in the quark-gluon plasma is proposed. Photon dispersion relation in the presence of the CP-odd topological regions generated by the chiral anomaly acquires an imaginary mass. It allows photon radiation through the decay q → qγ and annihilation qq¯→ γ processes closely related to the chiral Cherenkov radiation. Unlike previous proposals this mechanism does not require an external magnetic field. The differential photon emission rate per unit volume is computed and shown to be comparable to the rate of photon emission in conventional processes.
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This article is published as Tuchin, Kirill. "Photon radiation in hot nuclear matter by means of chiral anomalies." Physical Review C 99, no. 6 (2019): 064907. DOI: 10.1103/PhysRevC.99.064907. Copyright 2019 The Authors. Attribution 4.0 International (CC BY 4.0). Posted with permission.
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