Pion crystals hosting topologically stable baryons
Abstract
We construct analytic (3+1)-dimensional inhomogeneous and topologically non-trivial pion systems using chiral perturbation theory. We discuss the effect of isospin asymmetry with vanishing electromagnetic interactions as well as some particular configurations with non-vanishing electromagnetic interactions. The inhomogeneous configurations of the pion fields are characterized by a non-vanishing topological charge that can be identified with baryons surrounded by a cloud of pions. This system supports a topologically protected persistent superflow. When the electromagnetic field is turned on the superflow corresponds to an electromagnetic supercurrent.
Cite
@article{arxiv.2012.05921,
title = {Pion crystals hosting topologically stable baryons},
author = {Fabrizio Canfora and Stefano Carignano and Marcela Lagos and Massimo Mannarelli and Aldo Vera},
journal= {arXiv preprint arXiv:2012.05921},
year = {2021}
}
Comments
v2: extended discussion and added references; matches published version on Physical Review D