Physical replicas and the Bose-glass in cold atomic gases

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dc.creatorMorrison, S.
dc.creatorKantian, A.
dc.creatorDaley, A. J.
dc.creatorKatzgraber, H. G.
dc.creatorLewenstein, M.
dc.creatorBüchler, H. P.
dc.creatorZoller, P.
dc.date2008-05-05
dc.date2008-09-23
dc.date.accessioned2026-07-07T10:04:12Z
dc.date.available2026-07-07T10:04:12Z
dc.descriptionWe study cold atomic gases in a disorder potential and analyze the correlations between different systems subjected to the same disorder landscape. Such independent copies with the same disorder landscape are known as replicas. While in general these are not accessible experimentally in condensed matter systems, they can be realized using standard tools for controlling cold atomic gases in an optical lattice. Of special interest is the overlap function which represents a natural order parameter for disordered systems and is a correlation function between the atoms of two independent replicas with the same disorder. We demonstrate an efficient measurement scheme for the determination of this disorder-induced correlation function. As an application, we focus on the disordered Bose-Hubbard model and determine the overlap function within perturbation theory and a numerical analysis. We find that the measurement of the overlap function allows for the identification of the Bose-glass phase in certain parameter regimes.
dc.description17 pages, 6 figures, updated and added several references, other minor changes and corrections
dc.identifierhttps://arxiv.org/abs/0805.0488
dc.identifierhttp://arxiv.org/abs/0805.0488
dc.identifierNew J. Phys. 10, 073032 (2008)
dc.identifierdoi:10.1088/1367-2630/10/7/073032
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/169578
dc.subjectOther Condensed Matter
dc.subjectDisordered Systems and Neural Networks
dc.titlePhysical replicas and the Bose-glass in cold atomic gases
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