2000/06/29 by Erik Luijten, Horst Meyer · 1 citation
Physics and Astronomy · #Artificial intelligence #Computer science #Condensed matter physics #Crossover #Ising model #Physics #Physics of Superconductivity and Magnetism #Quantum, superfluid, helium dynamics #Statistical physics #Theoretical and Computational Physics #cond-mat
paper · pdf · doi:10.1103/physreve.62.3257
published as Phys. Rev. E 62, 3257 (2000) · Accepted for publication in Phys. Rev. E
arxiv created 2000/06/29 · openalex publication_date 2000/09/01 · arxiv updated 2009/11/30 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
We present a detailed discussion of the crossover from mean-field to Ising critical behavior upon approach of the critical point, both for 3He and Xe. By combining different sets of experimental data, we are able to cover an unusually large temperature range on either side of the critical temperature T(c). Below T(c), we thus can make an accurate comparison with a recent calculation for the crossover of the coexistence curve. For the regime above T(c), an analysis of the compressibility demonstrates that the crossover regime in 3He is unexpectedly widened by a subtle interplay between quantum and critical fluctuations.