论文标题

在外部磁场下,Pion超流相变,包括逆磁催化效应

Pion superfluid phase transition under external magnetic field including inverse magnetic catalysis effect

论文作者

Mao, Shijun, Tian, Yvming

论文摘要

Pauli-Villars正则化NJL模型研究了外部磁场下的PION超氟相位转变,包括逆磁催化(IMC)效应。根据戈德石的定理,我们应用无质量的戈德石玻色($π^+$梅森)来确定乳头超流相位的开始。磁场依赖性耦合$ g(EB)$引入了反磁催化效应,这是磁场的降低函数。在固定温度和重晶化学势下,随着磁场的增长,包括IMC效应(IMC效应)的关键同源化学潜力增加,这与没有IMC效应的情况相似。这表明,在考虑或忽略IMC效应时,磁场会散发乳头超流相相。 IMC效应在固定磁场,温度和重度化学电位上的关键同源化学电位转移到更高的值。由于以较弱的耦合形成Pion超氟更困难。

Pion superfluid phase transition under external magnetic field including the inverse magnetic catalysis (IMC) effect is investigated by the Pauli-Villars regularized NJL model. Based on the Goldstone's theorem, we apply the massless Goldstone boson ($π^+$ meson) to determine the onset of pion superfluid phase. The inverse magnetic catalysis effect is introduced by the magnetic field dependent coupling $G(eB)$, which is a decreasing function of magnetic field. At fixed temperature and baryon chemical potential, the critical isospin chemical potential for pion superfluid phase transition including IMC effect increases as the magnetic field grows, which is similar as the case without IMC effect. This demonstrates that magnetic field disfavors the pion superfluid phase when considering or ignoring IMC effect. The critical isospin chemical potential at fixed magnetic field, temperature and baryon chemical potential is shifted to higher value by the IMC effect. Since it is more difficult to form pion superfluid with weaker coupling.

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