On the kinetic energy of unitary Fermi gas in a harmonic trapA. L. Zubarev1 and M. Zoubarev2
1 Department of Physics, Purdue University - West Lafayette, IN 47907, USA
2 University of Toronto at Scarborough - Toronto, ON, Canada M1C1A4
received 8 June 2009; accepted in final form 23 July 2009; published August 2009
published online 27 August 2009
We have considered the orbital-free approximation of the kinetic energy functional to investigate the zero-temperature properties of dilute harmonically trapped two-component Fermi gas at unitarity. It is shown that our approach provides a realible and inexpensive method to study superfluid strongly interacting dilute Fermi gases.
31.15.E- - Density-functional theory.
71.15.Mb - Density functional theory, local density approximation, gradient and other corrections.
03.75.Ss - Degenerate Fermi gases .
© EPLA 2009