Quintet pairing and non-Abelian vortex string in spin-3/2 cold atomic systems

Details Quintet pairing and non-Abelian vortex string in spin-3/2 cold atomic systems Quintet pairing and non-Abelian vortex string in spin-3/2 cold atomic systems

2005-12-23

arxiv.org/abs/cond-mat/0512602v4

Int. J. Mod. Phys. B V24, 311 (2010)

Physics

Condensed Matter

Strongly Correlated Electrons

revised version, accepted by Int. J. Mod. Phys. B

Scientific paper

10.1142/S0217979210054968

We study the s-wave quintet Cooper pairing phase ($S_{tot}=2$) 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.

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