Quantum depletion density of a homogeneous dilute Bose gas within improved Hartree-Fock approximation
Nguyễn Văn Thụ
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.
arXiv:2002.01624•Feb 5, 2020•0 citations