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Journal articles
Quantum phase transitions of a two-leg bosonic ladder in an artificial gauge field
Abstract : We consider a two leg bosonic ladder in a U(1) gauge field with both interleg hopping and interleg repulsion. As a function of the flux, the interleg interaction converts the commensurate-incommensurate transition from the Meissner to a Vortex phase, into an Ising-type of transition towards a density wave phase. A disorder point is also found after which the correlation functions develop a damped sinusoid behavior signaling a melting of the vortex phase. We discuss the differences on the phase diagram for attractive and repulsive interleg interaction. In particular, we show how repulsion favors the Meissner phase at low flux and a phase with a second incommensuration in the correlation functions for intermediate flux, leading to a richer phase diagram than in the case of interleg attraction. The effect of the temperature on the chiral current is also discussed.
Cited literature [118 references]
https://hal-ens-lyon.archives-ouvertes.fr/ensl-01813546
Contributor : Edmond Orignac <>
Submitted on : Tuesday, June 12, 2018 - 2:30:45 PM
Last modification on : Wednesday, February 17, 2021 - 3:26:07 PM
Long-term archiving on: : Friday, September 14, 2018 - 12:55:02 AM
Contributor : Edmond Orignac <>
Submitted on : Tuesday, June 12, 2018 - 2:30:45 PM
Last modification on : Wednesday, February 17, 2021 - 3:26:07 PM
Long-term archiving on: : Friday, September 14, 2018 - 12:55:02 AM
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