PT-symmetry breaking Hamiltonian interactions in BF models

摘要

Starting with a finite collection of Abelian models, all consistent interactions (in n >= 4 dimensions) that break the PT invariance axe obtained by means of the Hamiltonian deformation procedure based on local BRST cohomology. This paper enhances one of our previous works, where only PT-invariant deformations were considered. The associated coupled theory is an interacting, topological BF model exhibiting an open gauge algebra and on-shell reducibility relations.