Staggered spin susceptibility and chiral phase transition in thermal QED(3)
Staggered spin susceptibility and chiral phase transition in thermal QED(3)
复制标题
热 QED 中的交错自旋磁化率和手性相变 (3)
DOI：
10.1103/physrevd.88.125022
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发表时间：
2013-12
影响因子：
5
通讯作者：
Zong, Hong-shi
中科院分区：
文献类型：
--
作者：
Feng, Hong-tao;Zhou, Yu-qing;Yin, Pei-lin;Zong, Hong-shi
基于截断的Dyson-Schwinger方程，我们首先研究了顶点修正对交错自旋磁化率chi（s）的影响。数值结果表明，在研究交错自旋极化率时，顶点修正起着重要的作用。然后，我们将上述工作推广到有限温度的情况。首次发现，随着温度的升高，在chi（s）出现明显跳跃的相变点处，手征凝聚体消失，因此，交错自旋极化率可以作为QED（3）中手征相变的序参量.
Based on the truncated Dyson-Schwinger equation, we first study the influence of the vertex correction on the staggered spin susceptibility chi(s). The numerical results show that the vertex correction plays an important role in the study of the staggered spin susceptibility. We then generalize the above work to the case of finite temperature. It is found for the first time that, as the temperature increases, the chiral condensate vanishes at the phase transition point where chi(s) reveals an obvious skip, and therefore as a physical observable, the staggered spin susceptibility could be regarded as the order parameter of chiral phase transition in QED(3).