Condensed Matter Seminar

Austen Lamacraft
Oxford University, UK

Thursday, March 23, 2006
1:00 pm in SPL 52

The "magnetized superfluid" in the BCS-BEC crossover

Abstract: Recent experiments on two-component gases of fermionic atoms near a Feshbach resonance suggest that the detailed phase diagram for this system may soon be known. In the first part of this talk I will give the simplest theoretical treatment of this canonical many-body problem as a function of interaction strength, temperature, and the difference in density of the two species. The generic superfluid state is a mixture of bosonic pairs and unpaired fermions. In the second part I will discuss the properties of this mixture from the point of view of fermi liquid theory.