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arXiv 0912.0844hep-lat
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胶子、夸克和高密度下的解除禁闭

Gluons, quarks and deconfinement at high density

Jon-Ivar Skullerud

摘要:

在大的重子化学势μ下计算了双色QCD中的胶子和夸克传播子。胶子传播子在超流、受限相中是反屏蔽的,而在大μ、非受限相中是屏蔽的。我们提出了第一次尝试,以确定相应的电和磁胶子质量。由于超流隙的形成,夸克传播子在超流区发生了巨大的变化。这些修改包括零交叉出现在矢量部分的(正常)夸克传播,一个大的抑制标量部分,并出现异常传播。

英文摘要:

We compute gluon and quark propagators in 2-colour QCD at large baryon chemical potential mu. The gluon propagator is found to be antiscreened in the superfluid, confined phase and screened in the large-mu, deconfined phase. We present the first attempt to determine corresponding electric and magnetic gluon masses. The quark propagator undergoes dramatic modifications in the superfluid region as a result of the formation of a superfluid gap. These modifications include the appearance of zero crossings in the vector part of the (normal) quark propagator, a large suppression of the scalar part, and the emergence of anomalous propagation.

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