Analytical and numerical study of the Dirac equation in an interpolating Skyrme background determines that bound fermion states exist solely for electrically charged fermions with positive charge and negative angular momentum.
Magnetic Skyrmions coupled to fermions
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abstract
The index theorem implies that there are fermionic states localized on a soliton. Presence of these modes may significantly alter the pattern of interaction between the solitons. As a particular example we investigate the chiral magnetic Skyrmions coupled to spin-isospin fermions. It is shown that there are sequences of fermionic modes localized on the Skyrmions. We investigate the pattern of interaction between the soltions with localized modes and proved the existence of stable system of magnetic Skyrmions bounded by the strong attractive dipole interaction mediated by the chargeless fermionic modes.
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Revisiting fermion bound states in baby Skyrme background with Dzyaloshinskii Moriya interaction
Analytical and numerical study of the Dirac equation in an interpolating Skyrme background determines that bound fermion states exist solely for electrically charged fermions with positive charge and negative angular momentum.