Regular Article - Theoretical Physics
Driving chiral phase transition with ring diagram
Institute of Theoretical Physics, University of Wroclaw, 50204, Wrocław, Poland
Accepted: 19 August 2022
Published online: 6 September 2022
We study the dressing of four-quark interaction by the ring diagram, and its feeding back to the quark gap equation, in an effective chiral quark model. Implementing such an in-medium coupling naturally reduces the chiral transition temperature in a class of chiral models, and is capable of generating the inverse magnetic catalysis at finite temperatures. We also demonstrate the important role of confining forces, via the Polyakov loop, in a positive feedback mechanism which reinforces the inverse magnetic catalysis.
© The Author(s) 2022. corrected publication 2022
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