2004/10/05 by Meera M. Parish, Bogdan Mihaila, Eddy Timmermans +4
Physics and Astronomy · #Atomic and Subatomic Physics Research #Cold Atom Physics and Bose-Einstein Condensates #Quantum optics and atomic interactions #cond-mat.other #cond-mat.supr-con #hep-ph #nucl-th
paper · pdf · doi:10.1103/physrevb.71.064513
published as Phys.Rev. B71 (2005) 064513 · 9 figures
arxiv created 2004/10/05 · openalex publication_date 2005/02/23 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
We study the crossover from BEC to BCS pairing for dilute systems but with a realistic finite-range interaction. We exhibit the changes in the excitation spectrum that provide a clean qualitative distinction between the two limits. We also study how the dilute system converges to the results from a zero-range pseudopotential derived by Leggett.