2008/06/30 by J. P. D'Incao, Jose D'Incao, Seth T. Rittenhouse +3
Chemistry · Physics and Astronomy · #Atomic and Subatomic Physics Research #Atomic physics #Chemistry #Cold Atom Physics and Bose-Einstein Condensates #Dimer #Dissociation (chemistry) #Fermi Gamma-ray Space Telescope #Nuclear magnetic resonance #Physical chemistry #Physics #Physics of Superconductivity and Magnetism #Quantum mechanics #Scattering #physics.atom-ph
paper · pdf · doi:10.1103/physreva.79.030501
published as Phys. Rev. A 79, 030501 (2009) · 4.1 pages, 3 figures, revised text. Supplemental material provided: 2 pages, 2 figures
arxiv created 2008/12/16 · openalex publication_date 2009/03/11 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
We discuss a major theoretical generalization of existing techniques for handling the three-body problem that accurately describes the interactions among four fermionic atoms. Application to a two-component Fermi gas accurately determines dimer-dimer scattering parameters at finite energies and can give deeper insight into the corresponding many-body phenomena. To account for finite temperature effects, we calculate the energy-dependent complex dimer-dimer scattering length, which includes contributions from elastic and inelastic collisions. Our results indicate that strong finite-energy effects and dimer dissociation are crucial for understanding the physics in the strongly interacting regime for typical experimental conditions. While our results for dimer-dimer relaxation are consistent with experiment, they confirm only partially a previously published theoretical result.