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
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.