Polarization effects at finite temperature and magnetic field

Abstract

We study the screening of four-quark interaction by the ring diagram in an effective chiral quark model. This entails a medium dependent coupling which naturally reduces the chiral transition temperature in a class of models, and is capable of generating an inverse magnetic catalysis at finite temperature. These results are the first coherent description of inverse magnetic catalysis, anchored to a reliable field-theoretical basis.

10 pages, 2 figures

References in corpus (4)

• The Phase Structure of the Polyakov--Quark-Meson Model
• Susceptibilities and the Phase Structure of a Chiral Model with Polyakov Loops
• The renormalization group and quark number fluctuations in the Polyakov loop extended quark-meson model at finite baryon density
• NJL-type models in the presence of intense magnetic fields: the role of the regularization prescription