Superfluid to normal phase transition in strongly correlated bosons in two dimensions

J. Carrasquilla, Marcos Antonio Rigol

    Research output: Contribution to journalConference article

    Abstract

    Using quantum Monte Carlo simulations, we investigate the finite-temperature phase diagram of hard-core bosons (XY model) in two-dimensional lattices. To determine the phase boundaries, we perform a finite-size-scaling analysis of the superfluid stiffness in two different ways and find that both approaches provide results of comparable accuracy. Furthermore, we discuss how such a phase diagram can be determined by measuring the occupancy of the zero momentum mode in homogeneous and trapped systems. The latter approach can be used in current experiments with ultracold gases.

    Original languageEnglish (US)
    Article number012028
    JournalJournal of Physics: Conference Series
    Volume414
    Issue number1
    DOIs
    StatePublished - Jan 1 2013
    Event21st International Laser Physics Workshop - Calgary, AB, Canada
    Duration: Jul 23 2012Jul 27 2012

    Fingerprint

    bosons
    phase diagrams
    stiffness
    momentum
    scaling
    gases
    simulation
    temperature

    All Science Journal Classification (ASJC) codes

    • Physics and Astronomy(all)

    Cite this

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    title = "Superfluid to normal phase transition in strongly correlated bosons in two dimensions",
    abstract = "Using quantum Monte Carlo simulations, we investigate the finite-temperature phase diagram of hard-core bosons (XY model) in two-dimensional lattices. To determine the phase boundaries, we perform a finite-size-scaling analysis of the superfluid stiffness in two different ways and find that both approaches provide results of comparable accuracy. Furthermore, we discuss how such a phase diagram can be determined by measuring the occupancy of the zero momentum mode in homogeneous and trapped systems. The latter approach can be used in current experiments with ultracold gases.",
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    Superfluid to normal phase transition in strongly correlated bosons in two dimensions. / Carrasquilla, J.; Rigol, Marcos Antonio.

    In: Journal of Physics: Conference Series, Vol. 414, No. 1, 012028, 01.01.2013.

    Research output: Contribution to journalConference article

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    T1 - Superfluid to normal phase transition in strongly correlated bosons in two dimensions

    AU - Carrasquilla, J.

    AU - Rigol, Marcos Antonio

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    N2 - Using quantum Monte Carlo simulations, we investigate the finite-temperature phase diagram of hard-core bosons (XY model) in two-dimensional lattices. To determine the phase boundaries, we perform a finite-size-scaling analysis of the superfluid stiffness in two different ways and find that both approaches provide results of comparable accuracy. Furthermore, we discuss how such a phase diagram can be determined by measuring the occupancy of the zero momentum mode in homogeneous and trapped systems. The latter approach can be used in current experiments with ultracold gases.

    AB - Using quantum Monte Carlo simulations, we investigate the finite-temperature phase diagram of hard-core bosons (XY model) in two-dimensional lattices. To determine the phase boundaries, we perform a finite-size-scaling analysis of the superfluid stiffness in two different ways and find that both approaches provide results of comparable accuracy. Furthermore, we discuss how such a phase diagram can be determined by measuring the occupancy of the zero momentum mode in homogeneous and trapped systems. The latter approach can be used in current experiments with ultracold gases.

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