Title of Paper:Four-fermion interactions and the chiral symmetry breaking in an external magnetic field

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Links to published journals:https://journals.aps.org/prd/abstract/10.1103/PhysRevD.96.074019

Date of Publication:2017-10-17

Journal:Phys.Rev. D

Included Journals:SCI

Discipline:Natural Science

First-Level Discipline:Physics

Volume:96

Issue:7

Page Number:074019

Abstract:We investigate the chiral symmetry and its spontaneous breaking at finite temperature and in an external magnetic field with four-fermion interactions of different channels. Quantum and thermal fluctuations are included within the functional renormalization group approach, and properties of the set of flow equations for different couplings, such as its fixed points, are discussed. It is found that external parameters, e.g. the temperature and the external magnetic field and so on, do not change the structure of the renormalization group flows for the couplings.