论文标题
热和密集的手性不平衡夸克物质中的电磁光谱函数
Electromagnetic spectral functions in hot and dense chirally imbalanced quark matter
论文作者
论文摘要
使用热场理论的实时公式，在有限温度和密度评估了手性不平衡夸克物质的光子自能量。详细探讨了分析结构，以揭示与介质及其阈值中各种物理散射和衰减过程相对应的切割结构。手性对称性相中的夸克的质量是从Nambu-Jona-Lasinio模型的间隙方程中获得的。发现在有限的手性化学势存在下，手性冷凝物倾向于在低温下变得更强壮，而在高温值下则观察到相反的情况。获得电磁光谱功能的连续光谱，这纯粹是有限的手性化学势效应。
The photon self-energy from chirally imbalanced quark matter is evaluated at finite temperature and density using the real time formulation of thermal field theory. The analytic structure is explored in detail exposing the cut structure which corresponds to a variety of physical scattering and decay processes in the medium and their thresholds. The mass of the quarks in the chiral symmetry broken phase are obtained from the gap equation of the Nambu--Jona-Lasinio model. It is found that, in presence of finite chiral chemical potential, the chiral condensate tends to get stronger at low temperature while the opposite is observed at high values of temperature. A continuous spectrum is obtained for the electromagnetic spectral function and this is purely a finite chiral chemical potential effect.
