Neutral pion matter in strong magnetic fields

28 Jun 2017, 15:35
25m
talk

Speaker

Tomas Brauner (University of Stavanger)

Description

The ground state of QCD in sufficiently strong external magnetic fields and at moderate baryon chemical potential is a chiral soliton lattice (CSL) of neutral pions. This is a model-independent result based on low-energy effective field theory, and the magnetic fields and baryon densities required may occur in the cores of neutron stars. The spectrum of excitations above the CSL ground state contains a soft, nonrelativistic mode that gives an anomalous contribution to pressure, scaling with temperature and magnetic field as $T^{5/2}B^{3/2}$. Finally, I will argue that in stronger but still achievable magnetic fields, the neutral pion CSL background may catalyze Bose-Einstein condensation of charged pions.

Primary author

Tomas Brauner (University of Stavanger)

Presentation Materials

Your browser is out of date!

Update your browser to view this website correctly. Update my browser now

×