Chiral Magnetic Effect in a Lattice Model
Chiral Magnetic Effect in a Lattice Model
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DOI：
10.1103/physrevd.95.114023
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发表时间：
2017-02
期刊：
影响因子：
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通讯作者：
Bo Feng;D. Hou;Hui Liu;H. Ren;Ping-ping Wu;Yan Wu
中科院分区：
文献类型：
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作者：
Bo Feng;D. Hou;Hui Liu;H. Ren;Ping-ping Wu;Yan Wu
我们研究了解析的单圈贡献的手征磁效应（CME）使用晶格正则化与威尔逊费米子场。在连续极限下，我们发现手征磁流在非零温度下消失，但在零温度下出现，这与Pauli-Villas正则化的结果一致。然而，对于有限的晶格尺寸，手征磁流在非零温度下是非零的。但CME电流系数的数值与相同晶格参数的QCD全模拟结果相比很小。还评估了QCD动力学高阶修正的可能性。
We study analytically the one-loop contribution to the Chiral Magnetic Effect(CME) using lattice regularization with a Wilson fermion field. In the continuum limit, we find that the chiral magnetic current vanishes at nonzero temperature but emerges at zero temperature consistent with that found by Pauli-Villas regularization. For finite lattice size, however, the chiral magnetic current is nonvanishing at nonzero temperature. But the numerical vaule of the coefficient of CME current is very small compared with that extracted from the full QCD simulation for the same lattice parameters. The possibility of higher order corrections from QCD dynamics is also assessed.