Symmetry Analysis of Holes Localized on a Skyrmion in a Doped   Antiferromagnet
  We use the low-energy effective field theory for holes coupled to the staggered magnetization in order to investigate the localization of holes on a Skyrmion in a square lattice antiferromagnet. When two holes get localized on the same Skyrmion, they form a bound state. The quantum numbers of the bound state are determined by the quantization of the collective modes of the Skyrmion. Remarkably, for p-wave states the quantum numbers are the same as those of a hole-pair bound by one-magnon exchange. Two holes localized on a Skyrmion with winding number $n = 1$ or 2 may have s- or d-wave symmetry as well. Possible relations with preformed Cooper pairs of high-temperature superconductors are discussed. 
N. D. Vlasii, C. P. Hofmann, F.-J. Jiang, U.-J. Wiese
cond-mat.str-el hep-ph hep-th