Quantum Time Crystals and Interacting Gauge Theories in Atomic Bose-Einstein Condensates

Patrik Öhberg; Ewan M. Wright

doi:10.1103/PhysRevLett.123.250402

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.

Original language	English
Article number	250402
Journal	Physical Review Letters
Volume	123
Issue number	25
DOIs	https://doi.org/10.1103/PhysRevLett.123.250402
Publication status	Published - 20 Dec 2019

ASJC Scopus subject areas

General Physics and Astronomy

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© 2019 American Physical Society Phys. Rev. Lett. 123, 250402 – Published 20 December 2019 https://doi.org/10.1103/PhysRevLett.123.250402
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Quantum Time Crystals and Interacting Gauge Theories in Atomic Bose-Einstein Condensates

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