Effects of chiral imbalance and magnetic field on pion superfluidity and color superconductivity
Gaoqing Cao, Pengfei Zhuang
DOI 10.1103/PhysRevD.92.105030 · Physical Review D
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Abstract
The effects of chiral imbalance and external magnetic field on pion superfluidity and color superconductivity are investigated in extended Nambu–Jona-Lasinio models. We take the Schwinger approach to treat the interaction between the charged pion condensate and magnetic field at finite isospin density and include simultaneously the chiral imbalance and magnetic field at finite baryon density. For the superfluidity, the chiral imbalance and magnetic field lead to catalysis and inverse catalysis effects, respectively. For the superconductivity, the chiral imbalance enhances the critical baryon density, and the magnetic field results in a de Haas–van Alphan oscillation on the phase transition line.
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