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

J. Carrasquilla, M. Rigol

Research output: Contribution to journalConference articlepeer-review


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
Issue number1
StatePublished - 2013
Event21st International Laser Physics Workshop - Calgary, AB, Canada
Duration: Jul 23 2012Jul 27 2012

All Science Journal Classification (ASJC) codes

  • General Physics and Astronomy


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