Two-dimensional weakly interacting Bose gas in the fluctuation region
By N. Prokof’ev, B. Svistunov. 2002
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We study the crossover between the mean-field and critical behavior of the two-dimensional Bose gas throughout the fluctuation region of the Berezinskii-Kosterlitz-Thouless phase transition point. We argue that this crossover is described by universal (for all weakly interacting $|\ensuremath{\psi}{|}^{4}$ models) relations between thermodynamic parameters of the system, including superfluid and quasicondensate densities. We establish these relations with high-precision Monte Carlo simulations of the classical $|\ensuremath{\psi}{|}^{4}$ model on a lattice, and check their asymptotic forms against analytic expressions derived on the basis of the mean-field theory.
Subfields: Atomic and Molecular Physics, and Optics, Condensed Matter Physics
View Paper: https://www.semanticscholar.org/paper/ac65e9b7b767db6e62989bada03f2e486555e88f
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In Atomic and Molecular Physics, and Optics
In Condensed Matter Physics
Citations in the corpus
- Superfluid behaviour of a two-dimensional Bose gas (2012, background): “15 for the superfluid phase transition in a uniform system [15] with g̃ = 0.”