Topology-induced confined superfluidity in inhomogeneous arrays

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dc.creatorBuonsante, P.
dc.creatorBurioni, R.
dc.creatorCassi, D.
dc.creatorPenna, V.
dc.creatorVezzani, A.
dc.date2004-05-21
dc.date2004-12-15
dc.date.accessioned2026-07-07T02:58:17Z
dc.date.available2026-07-07T02:58:17Z
dc.descriptionWe report the first study of the zero-temperature phase diagram of the Bose-Hubbard model on topologically inhomogeneous arrays. We show that the usual Mott-insulator and superfluid domains, in the paradigmatic case of the comb lattice, are separated by regions where the superfluid behaviour of the bosonic system is confined along the comb backbone. The existence of such {\it confined superfluidity}, arising from topological inhomogeneity, is proved by different analytical and numerical techniques which we extend to the case of inhomogeneous arrays. We also discuss the relevance of our results to real system exhibiting macroscopic phase coherence, such as coupled Bose condensates and Josephson arrays.
dc.description6 pages, 4 figures, final version
dc.identifierhttps://arxiv.org/abs/cond-mat/0405520
dc.identifierhttp://arxiv.org/abs/cond-mat/0405520
dc.identifierPhys. Rev. B 70, 224510 (2004)
dc.identifierdoi:10.1103/PhysRevB.70.224510
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/24025
dc.subjectSoft Condensed Matter
dc.subjectStatistical Mechanics
dc.titleTopology-induced confined superfluidity in inhomogeneous arrays
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