磁化与磁场诱导修正：对磁流体动力学中QGP热光子产生的意义
Magnetization and Magnetic Field-Induced Correction: Implications for QGP Thermal Photon Production in Magnetohydrodynamic
AI总结：
该研究在(1+1)维相对论MHD框架下，纳入磁化率与弱场量子修正，计算QGP热光子产生率，发现光子产额主要由初始磁场决定，弱场修正可增强中间p_T区间热光子产生，为磁化QGP电磁可观测量研究提供理论基础。
AI中文摘要：
我们在(1+1)维相对论磁流体动力学（MHD）框架下研究磁化夸克胶子等离子体（QGP）的热光子发射，系统纳入磁化率χₘ，涵盖常数形式及格点QCD导出的温度依赖χₘ(T)参数化形式，还包含对夸克分布函数f_EM的弱场量子修正。采用Pu-Bjorken MHD框架，我们计算康普顿散射、q\bar{q}湮灭、轫致辐射及伴随再散射的湮灭过程的光子产生率，并将这些率在QGP时空演化上积分，得到横动量（p_T）谱。我们的结果表明，光子产额主要由初始磁场强度及其时间衰减曲线决定，在所探索的参数空间内，χₘ的影响可忽略不计；相反，弱场修正f_EM会在中间p_T区间诱导热光子产生出现明显增强。本工作建立了用于量化磁化QGP中电磁可观测量的严格理论框架，并为未来纳入自旋-磁化动力学的耗散MHD研究奠定了基础。
英文摘要：
We investigate thermal photon emission from magnetized quark-gluon plasma (QGP) within (1+1)-dimensional relativistic magnetohydrodynamics (MHD), systematically incorporating magnetic susceptibility $χ_m$---encompassing both constant and lattice-QCD-derived temperature-dependent $χ_m(T)$ parametrizations---and weak-field quantum corrections to quark distribution functions $f_{\rm EM}$. Employing the Pu-Bjorken MHD framework, we calculate photon production rates from Compton scattering, $q\bar{q}$ annihilation, bremsstrahlung, and annihilation with rescattering, and integrate these over the QGP spacetime evolution to obtain transverse momentum ($p_T$) spectra. Our results demonstrate that photon yields are predominantly governed by the initial magnetic field strength and its temporal decay profile, with $χ_m$ exerting negligible influence in the explored parameter space. In contrast, the weak-field correction $f_{\rm EM}$ induces a distinct enhancement in thermal photon production at intermediate $p_T$. 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.
