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论文类型：期刊论文

发表时间：2015-09-01

发表刊物：Communications in Theoretical Physics

卷号：64

页面范围：325-333

摘要：With the Nambu–Jona-Lasinio (NJL) model we calculate the properties of pion and σ-meson at finite
temperature and finite magnetic field. The obtained temperature and magnetic field strength dependence of the constituent quark mass M , the pion and σ-meson masses and the neutral pion decay constant indicates that, in the simple four fermion interaction model, there exists the magnetic catalysis effect. It also shows that the Gell-Mann–Oakes–Renner relation is violated obviously with the increasing of the temperature, and the effect of the magnetic field becomes pronounced only around the

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