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Meissner to vortex phase transition in a two-leg ladder in artificial gauge field

Abstract : We consider a two-leg boson ladder in artificial gauge field with hard-core intraleg and negligible interleg interactions. Using numerical simulations based on the Density Matrix Renormalization Group (DMRG) algorithm, combined with a bosonization approach, we study its commensurate-incommensurate transition to a vortex phase at a critical flux. We discuss the finite-size scaling behavior of the longitudinal current near the transition. For weak interchain bo-son hopping, the finite size scaling is in agreement with the predictions from bosonization.
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https://hal-ens-lyon.archives-ouvertes.fr/ensl-01145026
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Submitted on : Thursday, April 23, 2015 - 1:40:38 PM
Last modification on : Thursday, November 5, 2020 - 2:54:05 PM
Long-term archiving on: : Wednesday, April 19, 2017 - 3:42:16 AM

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M Di Dio, R Citro, S de Palo, E Orignac, M.-L Chiofalo. Meissner to vortex phase transition in a two-leg ladder in artificial gauge field. The European Physical Journal. Special Topics, EDP Sciences, 2015, Novel Quantum Phases and Mesoscopic Physics in Quantum Gases, 224 (3), pp.525. ⟨10.1140/epjst/e2015-02382-2⟩. ⟨ensl-01145026⟩

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