Inverse magnetic catalysis in Nambu-Jona-Lasinio model beyond mean field
Inverse magnetic catalysis in Nambu-Jona-Lasinio model beyond mean field
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Nambu-Jona-Lasinio 模型中超出平均场的逆磁催化
DOI：
10.1016/j.physletb.2016.05.018
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发表时间：
2016
影响因子：
4.4
通讯作者：
Mao Shijun
中科院分区：
文献类型：
--
作者：
Mao Shijun
我们在平均场近似之外的Nambu-Jona-Lasinio模型中研究了逆磁催化。介子到夸克的反馈嵌入在有限温度和磁场下的有效耦合常数中。在低温下，磁催化仍是主导效应，而在高温下，由于Pauli-Villars正则化方案中Goldstone模式的降维，介子修饰夸克质量随磁场的增加而下降。
We study inverse magnetic catalysis in the Nambu–Jona-Lasinio model beyond mean field approximation. The feed-down from mesons to quarks is embedded in an effective coupling constant at finite temperature and magnetic field. While the magnetic catalysis is still the dominant effect at low temperature, the meson dressed quark mass drops down with increasing magnetic field at high temperature due to the dimension reduction of the Goldstone mode in the Pauli–Villars regularization scheme.