Topological superfluid $^3$He-B: fermion zero modes on interfaces and in the vortex core
Abstract
Many quantum condensed matter systems are strongly correlated and strongly interacting fermionic systems, which cannot be treated perturbatively. However, topology allows us to determine generic features of their fermionic spectrum, which are robust to perturbation and interaction. We discuss the nodeless 3D system, such as superfluid He-B, vacuum of Dirac fermions, and relativistic singlet and triplet supercondutors which may arise in quark matter. The systems, which have nonzero value of topological invariant, have gapless fermions on the boundary and in the core of quantized vortices. We discuss the index theorem which relates fermion zero modes on vortices with the topological invariants in combined momentum and coordinate space.
Cite
@article{arxiv.1005.4672,
title = {Topological superfluid $^3$He-B: fermion zero modes on interfaces and in the vortex core},
author = {M. A. Silaev and G. E. Volovik},
journal= {arXiv preprint arXiv:1005.4672},
year = {2011}
}
Comments
paper is prepared for Proceedings of the Workshop on Vortices, Superfluid Dynamics, and Quantum Turbulence held on 11-16 April 2010, Lammi, Finland