Kosterlitz-Thouless transition in two-dimensional superfluid

2024/09/24 by A. M. Begun, Begun, A. M., A. V. Molochkov +5
Physics and Astronomy · #Cold Atom Physics and Bose-Einstein Condensates #FOS: Physical sciences #High Energy Physics - Lattice (hep-lat) #High Energy Physics - Theory (hep-th) #Physics of Superconductivity and Magnetism #Quantum, superfluid, helium dynamics

paper · pdf · doi:10.48550/arxiv.2409.15719

openalex publication_date 2024/09/24 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/01

Abstract

The 2d superfluid (complex ϕ⁴ theory in two dimensions) undergoes Kosterlitz-Thouless transition driven by phase fluctuations of the superfluid order parameter. We study the transition by Monte Carlo simulations and also develop an analytic approach based on the effective theory for the Goldstone mode.

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