The exact fermion zero mode on any BPS monopole-string-domain wall background takes the profile f=Ω^{-h/4}, and its localization moves among monopoles, strings, domain walls, and convex polyhedral vacuum regions with a fermion mass shift.
Fermions on the kink revisited
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abstract
We study fermion modes localized on the kink in the 1+1 dimensional $\phi^4$ model, coupled to the Dirac fermions with backreaction. Using numerical methods we construct self-consistent solutions of the corresponding system of coupled integral-differential equations and study dependencies of the scalar field of the kink and the normalizable fermion bound states on the values of the values of the parameters of the model. We show that the backreaction of the localized fermions significantly modifies the solutions, in particular it results in spatial oscillations of the profile of the kink and violations of the reflection symmetry of the configuration.
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Massless monopole-string-domain wall fermions and polyhedral vacuum fermions
The exact fermion zero mode on any BPS monopole-string-domain wall background takes the profile f=Ω^{-h/4}, and its localization moves among monopoles, strings, domain walls, and convex polyhedral vacuum regions with a fermion mass shift.