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Center for Nonlinear Studies |
Strongly interacting gases of fermionic atoms display a number of exact universal properties. Universality emerges in dilute systems with short-range interactions and implies that the system properties become independent of the microscopic details of the constituent particles. A parameter, known as the universal contact, was recently introduced to quantify several of these universal properties in Fermi gases. The contact is linked to the high momentum component of the static structure factor and can be measured experimentally via Bragg spectroscopy. In this talk I will present our measurements of the contact in a strongly interacting gas of Li-6 atoms. We have investigated both the interaction and temperature dependence of the contact as well as verifying a universal law for the static structure factor.
Host: Chris Ticknor, T-1, 5-5649, cticknor@lanl.gov