Pion Condensation by Rotation in a Magnetic Field.

Yizhuang Liu,Ismail Zahed

doi:10.1103/physrevlett.120.032001

Abstract

We show that the combined effects of a rotation plus a magnetic field can cause charged pion condensation. We suggest that this phenomenon may yield to observable effects in current heavy ion collisions at collider energies, where large magnetism and rotations are expected in off-central collisions.

Highlights

Introduction.—The combined effects of rotations and magnetic fields on Dirac fermions are realized in a wide range of physical settings, ranging from macroscopic spinning neutron stars and black holes [1] all the way to microscopic anomalous transport in Weyl metals [2]
Perhaps a less well-known effect stems from the dual combination of a rotation and a magnetic field on free or interacting Dirac fermions
When a rotation is applied along a magnetic field, the charge density was observed to increase in the absence of a chemical potential

Summary

Introduction

Introduction.—The combined effects of rotations and magnetic fields on Dirac fermions are realized in a wide range of physical settings, ranging from macroscopic spinning neutron stars and black holes [1] all the way to microscopic anomalous transport in Weyl metals [2]. When a rotation is applied along a magnetic field, the charge density was observed to increase in the absence of a chemical potential. In this Letter, we show that the combined effects of magnetism plus rotation can induce a pion superfluid phase in off-central heavy ion collision.

Results

Conclusion