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The pressure and entropy of a unitary Fermi gas with particle-hole fluctuation

Hao Gong

Faculty of Science, Bengbu University, Bengbu 233030, China

E-mail Address: gh@bbc.edu.cn

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Xiao-Xia Ruan

Faculty of Science, Jiangsu University, Zhenjiang 212013, China

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, and

Hong-Shi Zong

Department of Physics, Nanjing University, Nanjing 210093, China

State Key Laboratory of Theoretical Physics, Institute of Theoretical Physics, CAS, Beijing 100190, China

Joint Center for Particle, Nuclear Physics and Cosmology, Nanjing 210093, China

E-mail Address: zonghs@nju.edu.cn

Corresponding author.

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https://doi.org/10.1142/S021798491750364XCited by:0 (Source: Crossref)

Abstract

We calculate the pressure and entropy of a unitary Fermi gas based on universal relations combined with our previous prediction of energy which was calculated within the framework of the non-self-consistent T-matrix approximation with particle-hole fluctuation. The resulting entropy and pressure are compared with the experimental data and the theoretical results without induced interaction. For entropy, we find good agreement between our results with particle-hole fluctuation and the experimental measurements reported by ENS group and MIT experiment. For pressure, our results suffer from a systematic upshift compared to MIT data.

Keywords:

PACS: 03.75.Ss, 05.30.Fk, 03.75.Hh

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