夸克-胶子介质中的量子关联
Quantum correlation in quark-gluon medium
摘要：
我们研究了弦云几何的热力学和量子关联，其场论对偶是夸克-胶子介质。我们发现了纠缠熵第一定律在高夸克密度极限下的新的普适性。我们还发现，由于背景的屏蔽效应，关联函数一般随着背景介质的纠缠熵的增加而减小。我们用微扰和数值计算研究了介质的紫外和红外效应对全息互信息中观察到的相变行为的影响。此外，通过数值计算，我们表明，在IR区域的临界长度得到的互信息的行为类似于两点函数的相关长度。
英文摘要：
We study thermodynamics and quantum correlations of the string cloud geometry whose field theory dual is the quark-gluon medium. We found the novel universality of the entanglement entropy first law in the high quark density limit. We also showed that a correlation function generally decreases as the entanglement entropy of the background medium increases due to the screening effect of the background. We study the UV and IR effects of the medium on phase transition behaviour observed in the holographic mutual information using both perturbative and numerical computations. Moreover, by numerical computation, we show that in the IR region the critical length obtained from the mutual information behaves similar to the correlation length of the two-point function.
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