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The condensed fraction of a homogeneous dilute Bose gas within the improved Hartree-Fock approximation

Nguyễn Văn Thụ, Jonas Berx

Published Aug 1, 2022• 9 citations
Publisher
DOI
10.1007/s10955-022-02944-0

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Motivated by the recent experiment [R. Lopes et. al., Phys. Rev. Lett. 119, 190404 (2017)] with a homogeneous Bose gas, we investigate a homogeneous dilute Bose gas to reproduce the quantum depletion density. By means of Cornwall-Jackiw-Tomboulis effective action approach within improved Hartree-Fock approximation, the quantum depletion density is recovered in an easier manner.Additionally, the higher-order terms are taken into account for the condensed fraction.

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