Weakly Bound Dimers of Fermionic Atoms

D. S. Petrov, C. Salomon, and G. V. Shlyapnikov

Phys. Rev. Lett. 93, 090404 – Published 24 August 2004

Abstract

We discuss the behavior of weakly bound bosonic dimers formed in a two-component cold Fermi gas at a large positive scattering length $a$ for the interspecies interaction. We find the exact solution for the dimer-dimer elastic scattering and obtain a strong decrease of their collisional relaxation and decay with increasing $a$ . The large ratio of the elastic to inelastic rate is promising for achieving Bose-Einstein condensation of the dimers and cooling the condensed gas to very low temperatures.

Received 1 September 2003

DOI:https://doi.org/10.1103/PhysRevLett.93.090404

Authors & Affiliations

D. S. Petrov^1,2,*, C. Salomon³, and G. V. Shlyapnikov^1,2,3,†

¹FOM Institute for Atomic and Molecular Physics, Kruislaan 407, 1098 SJ Amsterdam, The Netherlands
²Russian Research Center Kurchatov Institute, Kurchatov Square, 123182 Moscow, Russia
³Laboratoire Kastler Brossel,‡ 24 rue Lhomond, F-75231 Paris CEDEX 05, France

^*Present address: ITAMP and Department of Physics, Harvard University, Cambridge, MA 02138 U.S.A.
^†Present address: LPTMS, Université Paris Sud, 91405 Orsay, France, and WZI, University of Amsterdam, 1018 XE Amsterdam, The Netherlands.
^‡ LKB is a Unité de Recherche de l’Ecole Normale Supérieure et de l’Université Paris 6, associée au CNRS.

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Issue

Vol. 93, Iss. 9 — 27 August 2004

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