https://doi.org/10.1140/epja/s10050-024-01335-1
Regular Article - Theoretical Physics
An NJL model analysis of a magnetised nonextensive QCD medium
1
Institut für Theoretische Physik, Johann Wolfgang Goethe-Universität, Max-von-Laue-Str. 1, D-60438, Frankfurt am Main, Germany
2
School of Nuclear Science and Technology, University of Chinese Academy of Sciences, 100049, Beijing, China
a chowdhury.aminulislam@gmail.com, chowdhury@physik.uni-frankfurt.de
Received:
16
December
2023
Accepted:
9
May
2024
Published online:
24
May
2024
We investigate the effect of a background magnetic field when applied to a nonextensive QCD medium in a 
flavour Nambu— Jona-Lasinio model. The effect of a constant as well as an eB-dependent coupling is considered. For the constant coupling, the well-known magnetic catalysis effect is observed with reduced strength in both the condensates and the transition temperatures compared to the standard extensive medium. In the case of a field-dependent coupling, we observe a competition between the nonextensive parameter, q and eB. With sufficiently high q-values, the phenomenon of inverse magnetic catalysis —, a well-known trait in effective models featuring eB-dependent coupling, appears to be eliminated within the range of magnetic fields examined in our present study.
© The Author(s) 2024
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