Campostrini, Massimo and Vicari, Ettore (2010) Trap-size scaling in confined particle systems at quantum transitions. Physical review. A, Atomic, Molecular, and Optical Physics, 81 . 023606. ISSN 1094-1622
Full text not available from this repository.Abstract
We develop a trap-size scaling theory for trapped particle systems at quantum transitions. As a theoretical laboratory, we consider a quantum XY chain in an external transverse field acting as a trap for the spinless fermions of its quadratic Hamiltonian representation. We discuss trap-size scaling at the Mott insulator to superfluid transition in the Bose-Hubbard model. We present exact and accurate numerical results for the XY chain and for the low-density Mott transition in the hard-core limit of the one-dimensional Bose-Hubbard model. Our results are relevant for systems of cold atomic gases in optical lattices.
Item Type: | Article |
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Additional Information: | Imported from arXiv |
Subjects: | Area02 - Scienze fisiche > FIS/02 - Fisica teorica, modelli e metodi matematici |
Divisions: | Dipartimenti (until 2012) > DIPARTIMENTO DI FISICA " E. FERMI" |
Depositing User: | dott.ssa Sandra Faita |
Date Deposited: | 08 Apr 2015 17:59 |
Last Modified: | 08 Apr 2015 17:59 |
URI: | http://eprints.adm.unipi.it/id/eprint/1763 |
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