aCentro Atómico de Bariloche and Instituto Balseiro, Comisión Nacional de Energía Atómica, 8400 Bariloche, Argentina
bDepartment of Physics and Astronomy, Rutgers University, Piscataway, NJ 08854, USA
Abstract:
We generalize the Callan–Harvey mechanism to the case of actions with a nonlocal mass term for the fermions. Using a (2+1)-dimensional model as a concrete example, we show that both the existence and properties of localized zero modes can also be consistently studied when the mass is nonlocal. We derive some general properties from a study of the resulting integral equations, and consider their realization in a concrete example.