Eur. Phys. J. D (2012) 66: 217
https://doi.org/10.1140/epjd/e2012-30152-y

Regular Article

Excess energy of an ultracold Fermi gas in a trapped geometry

¹ Department of Physics, University of Calcutta, 92 APC Road, 700009 Kolkata, India
² Department of Physics, Indian Institute of Technology-Madras, 600036 Chennai, India

^a e-mail: sbiswas.phys.cu@gmail.com

Received: 6 March 2012
Received in final form: 18 May 2012
Published online: 28 August 2012

Abstract

We have analytically explored finite size and interparticle interaction corrections to the average energy of a harmonically trapped Fermi gas below and above the Fermi temperature, and have obtained a better fitting for the excess energy reported by DeMarco and Jin [Science 285, 1703 (1999)]. We have presented a perturbative calculation within a mean field approximation.