Isospin of topological defects in Dirac systems

@article{Herbut2012IsospinOT,
  title={Isospin of topological defects in Dirac systems},
  author={Igor F. Herbut},
  journal={Physical Review B},
  year={2012},
  volume={85},
  pages={085304}
}
  • I. Herbut
  • Published 2 September 2011
  • Physics
  • Physical Review B
We study the Dirac quasiparticles in $d$-dimensional lattice systems of electrons in the presence of domain walls ($d=1$), vortices ($d=2$), or hedgehogs ($d=3$) of superconducting and/or insulating, order parameters, which appear as mass terms in the Dirac equation. Such topological defects have been known to carry nontrivial quantum numbers, such as charge and spin. Here we discuss their additional internal degree of freedom: irrespective of the dimensionality of space and the nature of… 

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