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arXiv · 1812.04672

On quantum time crystals and interacting gauge theories in atomic Bose-Einstein condensates

Patrik Öhberg·Ewan M. Wright
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Abstract

We study the dynamics of a Bose-Einstein condensate trapped circumferentially on a ring, and which is governed by an interacting gauge theory. We show that the associated density-dependent gauge potential and concomitant current nonlinearity permits a ground state in the form of a rotating chiral bright soliton. This chiral soliton is constrained to move in one direction by virtue of the current nonlinearity, and represents a time crystal in the same vein as Wilczek's original proposal.

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Patrik Öhberg, Ewan M. Wright. 2019-08-08. On quantum time crystals and interacting gauge theories in atomic Bose-Einstein condensates. https://doi.org/10.1103/physrevlett.123.250402

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