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arXiv 1504.02159hep-lat
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有限密度和温度格点量子色动力学中的相变

Phase transition in finite density and temperature lattice QCD

Rui Wang, Ying Chen, Ming Gong, Chuan Liu, Yu-Bin Liu, Zhao-Feng Liu, Jian-Ping Ma, Xiang-Fei Meng, Jian-Bo Zhang

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4 pages, 4 figures, to be submitted to Chinese Physics C
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摘要：

研究了有限温度和有限化学势下格点量子色动力学中手征凝聚体的行为。该研究使用两种轻夸克和一系列晶格尺寸为$24\times12^{2}\times6$的$β$和$ma$。计算是在泰勒展开形式主义。我们能够计算一阶和二阶导数的$\langle\barψψ\rangle$在isoscope和isovector渠道。在一阶导数较小的情况下，我们发现二阶导数在接近相变的地方相当大，并且在两个通道中有限化学势的影响下，$\barψψ$的大小都减小了.

英文摘要：

We investigate the behavior of the chiral condensate in lattice QCD at finite temperature and finite chemical potential. The study was done using two flavors of light quarks and with a series of $β$ and $ma$ at the lattice size $24\times12^{2}\times6$. The calculation was done in the Taylar expansion formalism. We are able to calculate the first and second order derivatives of $\langle\barψψ\rangle$ in both isoscalar and isovector channels. With the first derivatives being small, we find that the second derivatives are sizable close to the phase transition and the magnitude of $\barψψ$ decreases under the influence of finite chemical potential in both channels.

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