Quintet pairing and non-Abelian vortex string in spin-3/2 cold atomic systems
Strongly Correlated Electrons
2010-02-11 v4 Superconductivity
Abstract
We study the s-wave quintet Cooper pairing phase () in spin-3/2 cold atomic systems and identify various novel features which do not appear in the spin-1/2 counterpart. A single quantum vortex is shown to be energetically less stable than a pair of half-quantum vortices (HQV). The HQV exhibits the global analogue of the non-Abelian Alice string and SO(4) Cheshire charge in gauge theories. The non-Abelian HQV loop enables topological generation of quantum entanglement.
Cite
@article{arxiv.cond-mat/0512602,
title = {Quintet pairing and non-Abelian vortex string in spin-3/2 cold atomic systems},
author = {Congjun Wu and Jiangping Hu and Shou-Cheng Zhang},
journal= {arXiv preprint arXiv:cond-mat/0512602},
year = {2010}
}
Comments
revised version, accepted by Int. J. Mod. Phys. B