Specific Heat of a Unitary Fermi Gas Including Particle-Hole Fluctuation**Supported by the Research Fund for Advanced Talents of Jiangsu University under Grant No 14JDG174, the National Natural Science Foundation of China under Grants Nos 11447126, 11275097, 11475085 and 11535005, and the Natural Science Foundation of Jiangsu Province of China under Grant No BK20130078.

Abstract

We investigate the particle-hole fluctuation correction to the specific heat of an ultracold Fermi gas at unitarity within the framework of the non-self-consistent T-matrix approximation in the normal phase. We find good agreement between our theoretical predictions and the experimental data measured by the MIT group, apart from discrepancies near the transition temperature. At high temperature, our calculated specific heat has the tendency to approach the specific heat of the Boltzmann gas.