Tensor condensate accompanied by chiral transition in a strong magnetic field

TL;DR

This paper explores how strong magnetic fields induce tensor and chiral condensates in a quark model, revealing phase transitions and oscillatory spin polarization behaviors at finite temperature and density.

Contribution

It demonstrates the emergence of tensor condensates due to four-fermion interactions and their relation to spin polarization in a magnetic field within the NJL model.

Findings

Tensor condensate appears at high chemical potential.

Spin polarization exhibits oscillatory behavior during phase transition.

Phase transition to tensor condensate requires sufficiently large chemical potential.

Abstract

We investigate tensor condensates and chiral condensates in the (2+1)-flavor Nambu-Jona-Lasinio model at finite temperature and density in the presence of a strong magnetic field. The emergence of the tensor condensate is attributed to the four-fermion interaction. It is shown that a sufficiently large chemical potential is necessary for the occurrence of a phase transition towards tensor condensate. Furthermore, we investigate the correlation between tensor condensate and spin polarization, which accounts for the oscillatory behavior of the spin polarization during the transition from the chiral condensate to tensor condensate phase.