The role of Debye mass in the chiral crossover in a strong magnetic field  

作　　者：Jia Zhang Xin-Jian Wen 

机构地区：[1]Institute of Theoretical Physics,State Key Laboratory of Quantum Optics and Quantum Optics Devices,Shanxi University,Taiyuan,Shanxi 030006,China

出　　处：《Communications in Theoretical Physics》2022年第10期68-75,共8页理论物理通讯（英文版）

基　　金：The authors would like to thank support from the National Natural Science Foundation of China under the Grant Nos.11875181,12147215,and 11705163;This work was also sponsored by the Fund for Shanxi‘1331 Project’Key Subjects Construction.

摘　　要：In this paper,the Debye mass of quarks is investigated in the Nambu–Jona-Lasinio model at zero and nonzero chemical potentials.In a uniform plasma,the Debye mass usually behaves as a monotonous increasing function of the temperature,the chemical potential and the magnetic field.At the fixed coupling interaction G,we find that the magnetic catalysis(MC)on the occurrence of the chiral restoration could be revealed by the susceptibility of the Debye mass dmD/dT at low chemical potential and by the quantity TdmD/dT in the region of moderate densities.However,the inverse MC is realized under a thermomagnetic coupling constant G(B,T)by the behavior of the Debye mass at both zero and nonzero chemical potentials.

关 键 词：chiral restoration strong magnetic field Debye mass Nambu-Jona-Lasinio 

分 类 号：O469[理学—凝聚态物理]