Pion crystals hosting topologically stable baryons
2021; American Physical Society; Volume: 103; Issue: 7 Linguagem: Inglês
10.1103/physrevd.103.076003
ISSN2470-0037
AutoresFabrizio Canfora, Stefano Carignano, Marcela Lagos, Massimo Mannarelli, Aldo Vera,
Tópico(s)Black Holes and Theoretical Physics
ResumoWe 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.
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