Fermion-scalar interactions with domain wall fermions

@article{Vranas2000FermionscalarIW,
  title={Fermion-scalar interactions with domain wall fermions},
  author={Pavlos Vranas and Ioannis N. Tziligakis and J. B. Kogut},
  journal={Physical Review D},
  year={2000},
  volume={62},
  pages={054507}
}
Domain wall fermions are defined on a lattice with an extra direction, the size of which controls the chiral properties of the theory. When gauge fields are coupled to domain wall fermions the extra direction is treated as an internal flavor space. Here it is found that this is not the case for scalar fields. Instead, the interaction takes place only along the link that connects the boundaries of the extra direction. This reveals a richness in the way different spin particles are coupled to… 

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