Volume 87, Number 3, August 2009
Article Number 33001
Number of page(s) 4
Section Atomic, Molecular and Optical Physics
Published online 27 August 2009
EPL, 87 (2009) 33001
DOI: 10.1209/0295-5075/87/33001

On the kinetic energy of unitary Fermi gas in a harmonic trap

A. 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