标题： 接近QCD临界点时光子发射率的增强 显示英文标题

标题： Enhancement of photon emission rate near QCD critical point

摘要： 我们利用动态临界现象的有效理论计算了在QCD临界点附近光子发射率的增强，并推导出一个普遍的光子谱。发射率的变化类似于电导率，随着关联长度（$\xi$）的增加而增加，在临界点处发散。在标度区域，谱表现出$\omega dN_{\gamma}/d^3k \propto \omega^{-1/2}$特征，转换发生在频率接近剪切阻尼率$\omega \sim \gamma_{\eta}/\xi^2$时，反映了近临界液体的非平衡性质。 显示英文摘要

摘要： We compute photon emission rate enhancement near the QCD critical point using an effective theory of dynamic critical phenomena and derive a universal photon spectrum. The emission rate scales similarly to conductivity, increasing with the correlation length ($\xi$), diverging at the critical point. The spectrum exhibits $\omega dN_{\gamma}/d^3k \propto \omega^{-1/2}$ in the scaling regime, with the transition occurring at a frequency comparable to shear damping rate $\omega \sim \gamma_{\eta}/\xi^2$, reflecting the nonequilibrium properties of the near-critical liquid.