Los Alamos National Laboratory
Lab Home  |  Phone
Quantum Institute : 2007 Quantum Lunch Seminar Archives


  • Coordinator
    Diego Dalvit
  • Quantum Lunch Location:
    T-Division Conference Room, TA-3,
    Building 123, Room 121

Quantum Institute: Visitor Schedule

The Quantum Lunch is regularly held on Thursdays in the Theoretical Division Conference Room, TA-3, Building 123, Room 121.
For more information, contact Diego Dalvit.

February 27, 2007
Tuesday, 1:00 PM

G.V. Shlyapnikov,
LPTMS, Orsay, France

Molecular Regimes in Ultracold Fermi Gases


I will give a brief overview of recent studies of weakly bound homonuclear molecules in ultracold two-component Fermi. It will be emphasized that these (highly excited) molecules represent novel composite bosons, which exhibit features of Fermi statistics at short intermolecular distances. In particular, Pauli exclusion principle for identical fermionic atoms provides a strong suppression of collisional relaxation of such molecules into deep bound states, which allows the creation of long-lived molecular Bose-Einstein condensates. I then turn to heteronuclear molecules that should be formed in fermionic mixtures and discuss how the stability of these molecules depends on the mass ration. It will be shown that molecules formed by heavy and light fermionic atoms are characterized by a strong exchange repulsion, which can lead to the formation of Wigner crystal.

Operated by Los Alamos National Security, LLC for the U.S. Department of Energy's NNSA

Inside | © Copyright 2007-8 Los Alamos National Security, LLC All rights reserved | Disclaimer/Privacy | Web Contact