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arXiv · 1310.0382

Optimal Persistent Currents for Interacting Bosons on a Ring with a Gauge Field

Marco Cominotti·Davide Rossini·Matteo Rizzi·Frank Hekking·Anna Minguzzi
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Abstract

We study persistent currents for interacting one-dimensional bosons on a tight ring trap, subjected to a rotating barrier potential, which induces an artificial U(1) gauge field. We show that, at intermediate interactions, the persistent current response is maximal, due to a subtle interplay of effects due to the barrier, the interaction and quantum fluctuations. These results are relevant for ongoing experiments with ultracold atomic gases on mesoscopic rings.

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Marco Cominotti, Davide Rossini, Matteo Rizzi, Frank Hekking, Anna Minguzzi. 2014-07-08. Optimal Persistent Currents for Interacting Bosons on a Ring with a Gauge Field. https://doi.org/10.1103/physrevlett.113.025301

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