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Soft-contribution to thermal photon emission from chiral QCD medium

Nilanjan Chaudhuri1,*, Sourav Duari1,3,†, Pradip Roy2,3,‡, and Sourav Sarkar1,3,§

  • *Contact author: n.chaudhri@vecc.gov.in; nilanjan.vecc@gmail.com
  • †Contact author: s.duari@vecc.gov.in; sduari.vecc@gmail.com
  • ‡Contact author: pradipk.roy@saha.ac.in
  • §Contact author: sourav.vecc@gmail.com
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Phys. Rev. D 112, 094046 – Published 24 November, 2025

DOI: https://doi.org/10.1103/s8mp-h25n

Abstract

We evaluate the thermal photon emission rate from a chirally asymmetric quark gluon plasma using the hard thermal loop approximation. The quasiparticle and plasmino modes prevalent at finite temperature split into L and R-modes in the presence of chiral imbalance and are found to disperse differently acquiring different thermal masses. The soft contribution to the thermal photon emission rate obtained from the retarded self-energy is found to contain additional terms proportional to the square of the quark and chiral chemical potentials which is found to cause an enhancement to thermal photon emission in the presence of chiral imbalance.

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Phys. Rev. D 112, 094046– Published 24 November, 2025
  • Received 14 August 2025
  • Accepted 5 November 2025
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Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article’s title, journal citation, and DOI. Funded by SCOAP3.

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