QCD临界点及其相关的软模
QCD Critical Points and Their Associated Soft Modes
摘要：
平均场水平计算表明，由于排斥矢量相互作用，QCD物质在电荷中性约束下可以有多个临界点，并具有色超导性，这实际上意味着QCD物质非常软，可以同时形成双夸克和手征凝聚，并与重子密度耦合。利用耗散相对论流体动力学分析了QCD临界点附近的动力学密度涨落作为可能的软模。结果表明，在QCD CP附近，熵涨落只得到增强，而由于机械密度涨落引起的声模则被强烈衰减，这可能表明在CP处马赫锥被抑制甚至完全消失。
英文摘要：
The mean-field level calculation shows that the QCD matter can have multiple critical points incorporating the color superconductivity under charge neutrality constraint due to the repulsive vector interaction; this actually implies that the QCD matter is very soft for a simultaneous formation of diquark and chiral condensates coupled with the baryonic density. Dynamical density fluctuations are analyzed as possible soft modes around the QCD critical point using dissipative relativistic fluid dynamics. It is found that the entropy fluctuation solely gets enhanced while the sound modes due to mechanical density fluctuations are strongly attenuated around the QCD CP, which may suggest a suppression or even total disappearance of Mach cone at the CP.
机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。
