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

Abstract 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...

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Bibliographic Details
Published in:Communications in theoretical physics 2022-10, Vol.74 (10), p.105301
Main Authors: Zhang, Jia, Wen, Xin-Jian
Format: Article
Language:English
Subjects:
chiral restoration
Debye mass
Nambu–Jona-Lasinio
strong magnetic field
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Summary:Abstract 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 d m D /d T at low chemical potential and by the quantity T d m D /d T 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.
ISSN:0253-6102
1572-9494
DOI:10.1088/1572-9494/ac7f96