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Interacting fermions in synthetic non-Abelian gauge fields

Shenoy, Vijay B and Vyasanakere, Jayantha P and Ghosh, Sudeep Kumar (2012) Interacting fermions in synthetic non-Abelian gauge fields. In: Current Science, 103 (5). pp. 525-535.

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Official URL: http://www.currentscience.ac.in/php/issue.php?vol=...

Abstract

Generation and study of synthetic gauge fields has enhanced the possibility of using cold atom systems as quantum emulators of condensed matter Hamiltonians. In this article we describe the physics of interacting spin -1/2 fermions in synthetic non-Abelian gauge fields which induce a Rashba spin-orbit interaction on the motion of the fermions. We show that the fermion system can evolve to a Bose-Einstein condensate of a novel boson which we call rashbon. The rashbon-rashbon interaction is shown to be independent of the interaction between the constituent fermions. We also show that spin-orbit coupling can help enhancing superfluid transition temperature of weak superfluids to the order of Fermi temperature. A non-Abelian gauge field, when used in conjunction with another potential, can generate interesting Hamiltonians such as that of a magnetic monopole.

Item Type: Journal Article
Additional Information: Copyright of this article belongs to Indian Academy of Sciences.
Keywords: Cold Atom Systems; Fermions; Rashbons; Synthetic Gauge Fields
Department/Centre: Division of Physical & Mathematical Sciences > Physics
Depositing User: Id for Latest eprints
Date Deposited: 28 Feb 2013 10:02
Last Modified: 28 Feb 2013 10:02
URI: http://eprints.iisc.ac.in/id/eprint/45396

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