2005/08/11 by Rajat K. Bhaduri, Bhaduri, Rajat K., M. K. Srivastava +1
Physics and Astronomy · #Atomic and Subatomic Physics Research #Cold Atom Physics and Bose-Einstein Condensates #FOS: Physical sciences #Quantum, superfluid, helium dynamics #Statistical Mechanics (cond-mat.stat-mech) #cond-mat.stat-mech
paper · pdf · doi:10.48550/arxiv.cond-mat/0508290
7 pages, no figsures
arxiv created 2005/08/11 · openalex publication_date 2005/08/11 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/28
In a recent paper entitled "High temperature expansion applied to fermions near Feshbach resonance" (Phys. Rev. Lett. 92, 160404 (2004)), Ho and Muller have demonstrated a remarkable similarity between its high and low temperature properties at resonance. The quantum second virial coefficient plays a crucial role in their analysis, and has a universal value at resonance. In this paper, we explore the connection between the quantum and classical second virial coefficients, and show that near a Feshbach resonance, an exact mapping from the quantum to classical form is possible. This gives rise to a scale independent inverse square potential for the classical second virial coefficient. It is suggested that it may be tested by measuring the isothermal compressibility of the gas on the repulsive side of the resonance.