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 boson hopping, the finite size scaling is in agreement with the predictions from bosonization.
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Di Dio, M., Citro, R., De Palo, S. et al. Meissner to vortex phase transition in a two-leg ladder in artificial gauge field. Eur. Phys. J. Spec. Top. 224, 525–531 (2015). https://doi.org/10.1140/epjst/e2015-02382-2
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DOI: https://doi.org/10.1140/epjst/e2015-02382-2