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

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

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 effe...

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Veröffentlicht in:arXiv.org 2014-07
Hauptverfasser: Cominotti, Marco, Rossini, Davide, Rizzi, Matteo, Hekking, Frank, Minguzzi, Anna
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Bosons
Physics - Quantum Gases
Quantum phenomena
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creator Cominotti, Marco
Rossini, Davide
Rizzi, Matteo
Hekking, Frank
Minguzzi, Anna
description 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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subjects Bosons
Physics - Quantum Gases
Quantum phenomena
title Optimal Persistent Currents for Interacting Bosons on a Ring with a Gauge Field
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