Condensed Matter Seminar

Soon Yong Chang
Institute for Nuclear Theory, University of Washington

Thursday, April 5, 2007
1:00 pm in SPL 52

'Artificial' Superfluidity

Abstract: A gas of atomic fermions can be made to interact and produce 'artificial' superfluid phase in the laboratories. This opens up interesting possibilities of studying superfluid properties in the weakly interacting fermionic limit as well as the composite boson limit. In the middle of these extremes, there is a smooth crossover of the statistics: the system is neither purely fermionic nor purely bosonic but a mixture of both.

Ab-initio numerical method is the only method accurate enough to characterize this puzzling intermediate regime and capture with quantitative accuracy what goes on in these man-made superfluids.

Discussions of recent advances in the Quantum Monte Carlo calculations are provided. Pairing properties of the homogeneous and inhomogeneous fermi gases at zero and finite temperatures are presented.