Equation of state of an interacting Bose gas at finite temperature: a Path Integral Monte Carlo study

Abstract

By using exact Path Integral Monte Carlo methods we calculate the equation of state of an interacting Bose gas as a function of temperature both below and above the superfluid transition. The universal character of the equation of state for dilute systems and low temperatures is investigated by modeling the interatomic interactions using different repulsive potentials corresponding to the same s-wave scattering length. The results obtained for the energy and the pressure are compared to the virial expansion for temperatures larger than the critical temperature. At very low temperatures we find agreement with the ground-state energy calculated using the diffusion Monte Carlo method.

7 pages, 6 figures

References in corpus (1)

• Finite-temperature properties of quasi-2D Bose-Einstein condensates

Cited by in corpus (23)

• Ultracold Dipolar Gases in Optical Lattices
• Path-integral Monte Carlo study on a droplet of a dipolar Bose-Einstein condensate stabilized by quantum fluctuation
• Critical temperature of interacting Bose gases in two and three dimensions
• Bose-Einstein-condensed gases in arbitrarily strong random potentials
• Dilute Bose gas with correlated disorder: A Path Integral Monte Carlo study
• Recursive Schr\" odinger Equation Approach to Faster Converging Path Integrals
• Pairing, Ferromagnetism, and Condensation of a normal spin-1 Bose gas
• Finite-temperature phases of trapped bosons in a two-dimensional quasiperiodic potential
• Attractive Solution of Binary Bose Mixtures: Liquid-Vapor Coexistence and Critical Point
• Thermodynamics of a dilute Bose gas: A path-integral Monte Carlo study
• Thermodynamics of Bose gases from functional renormalization with a hydrodynamic low-energy effective action
• Complex Langevin approach to interacting Bose gases
• Critical Temperature of Interacting Bose Gases in Periodic Potentials
• Goldstino spectrum in an ultracold Bose-Fermi mixture with explicitly broken supersymmetry
• Weakly-interacting Bose-Bose mixtures from the functional renormalisation group
• Equation of state and contact of a strongly interacting Bose gas in the normal state
• Local condensate depletion at trap center under strong interactions
• Temperature-induced miscibility of impurities in trapped Bose gases
• Zonal estimators for quasiperiodic bosonic many-body phases
• Thermal-induced Local Imbalance in Repulsive Binary Bose Mixtures
• Quantum Monte Carlo simulation of BEC-impurity tunneling
• Combining Harmonic Sampling with the Worm Algorithm to Improve the Efficiency of Path Integral Monte Carlo
• Quasiparticle nature of the Bose polaron at finite temperature