The Budapest Quantum Optics Group

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Time-dependent density functional of the Fermi gas in the BCS-BEC crossover

Luca Salasnich

(University of Padova)

Time: Thu Nov 7 10:00:00 2013
Location: Building 1, Room 114, Auditorium

We introduce an efficient Thomas–Fermi–von Weizsacker density functional which describes accurately various static properties of fermionic superfluids in the BCS-BEC crossover. Then, the sound velocity and the collective frequencies of oscillations in a harmonic trap are derived from extended superfluid hydrodynamic equations which are the Euler–Lagrange equations of a Thomas–Fermi–von Weizsacker action functional. Finally, we show that this amazing Fermi gas supports shock waves and quantized vortices.