The Condensed Fraction of a Homogeneous Dilute Bose Gas Within the Improved Hartree–Fock Approximation

Research output: Contribution to journal › Journal article › Research › peer-review

Standard

The Condensed Fraction of a Homogeneous Dilute Bose Gas Within the Improved Hartree–Fock Approximation. / Van Thu, Nguyen; Berx, Jonas.

In: Journal of Statistical Physics, Vol. 188, No. 2, 16, 2022.

Research output: Contribution to journal › Journal article › Research › peer-review

Harvard

Van Thu, N & Berx, J 2022, 'The Condensed Fraction of a Homogeneous Dilute Bose Gas Within the Improved Hartree–Fock Approximation', Journal of Statistical Physics, vol. 188, no. 2, 16. https://doi.org/10.1007/s10955-022-02944-0

APA

Van Thu, N., & Berx, J. (2022). The Condensed Fraction of a Homogeneous Dilute Bose Gas Within the Improved Hartree–Fock Approximation. Journal of Statistical Physics, 188(2), [16]. https://doi.org/10.1007/s10955-022-02944-0

Vancouver

Van Thu N, Berx J. The Condensed Fraction of a Homogeneous Dilute Bose Gas Within the Improved Hartree–Fock Approximation. Journal of Statistical Physics. 2022;188(2). 16. https://doi.org/10.1007/s10955-022-02944-0

Author

Van Thu, Nguyen ; Berx, Jonas. / The Condensed Fraction of a Homogeneous Dilute Bose Gas Within the Improved Hartree–Fock Approximation. In: Journal of Statistical Physics. 2022 ; Vol. 188, No. 2.

Bibtex

@article{eb4f6affa4354ddf9e00f284c2bda304,
title = "The Condensed Fraction of a Homogeneous Dilute Bose Gas Within the Improved Hartree–Fock Approximation",
abstract = "Motivated by the recent experiment (Lopes et al. in Phys Rev Lett 119:190404, 2017) with a homogeneous Bose gas, we investigate a homogeneous dilute Bose gas to calculate the quantum depletion density. By means of the Cornwall–Jackiw–Tomboulis effective action approach within an improved Hartree–Fock approximation, the condensed fraction is recovered in an alternative theoretical approach and compared with corresponding findings in experimental data. A good agreement in the extremely small region of gas parameter is demonstrated. Furthermore, the ground state energy is also reattained and discussed.",
keywords = "Bose gas, Condensed fraction, Improved Hartree–Fock approximation, Quantum depletion",
author = "{Van Thu}, Nguyen and Jonas Berx",
note = "Funding Information: This research is funded by Vietnam National Foundation for Science and Technology Development (NAFOSTED) under grant number 103.01-2018.02. We are very grateful to M. Guilleumas for the useful conversations and to L. Raphael for extensive discussions about the experimental data. Publisher Copyright: {\textcopyright} 2022, The Author(s), under exclusive licence to Springer Science+Business Media, LLC, part of Springer Nature.",
year = "2022",
doi = "10.1007/s10955-022-02944-0",
language = "English",
volume = "188",
journal = "Journal of Statistical Physics",
issn = "0022-4715",
publisher = "Springer",
number = "2",

}

RIS

TY - JOUR

T1 - The Condensed Fraction of a Homogeneous Dilute Bose Gas Within the Improved Hartree–Fock Approximation

AU - Van Thu, Nguyen

AU - Berx, Jonas

N1 - Funding Information: This research is funded by Vietnam National Foundation for Science and Technology Development (NAFOSTED) under grant number 103.01-2018.02. We are very grateful to M. Guilleumas for the useful conversations and to L. Raphael for extensive discussions about the experimental data. Publisher Copyright: © 2022, The Author(s), under exclusive licence to Springer Science+Business Media, LLC, part of Springer Nature.

PY - 2022

Y1 - 2022

N2 - Motivated by the recent experiment (Lopes et al. in Phys Rev Lett 119:190404, 2017) with a homogeneous Bose gas, we investigate a homogeneous dilute Bose gas to calculate the quantum depletion density. By means of the Cornwall–Jackiw–Tomboulis effective action approach within an improved Hartree–Fock approximation, the condensed fraction is recovered in an alternative theoretical approach and compared with corresponding findings in experimental data. A good agreement in the extremely small region of gas parameter is demonstrated. Furthermore, the ground state energy is also reattained and discussed.

AB - Motivated by the recent experiment (Lopes et al. in Phys Rev Lett 119:190404, 2017) with a homogeneous Bose gas, we investigate a homogeneous dilute Bose gas to calculate the quantum depletion density. By means of the Cornwall–Jackiw–Tomboulis effective action approach within an improved Hartree–Fock approximation, the condensed fraction is recovered in an alternative theoretical approach and compared with corresponding findings in experimental data. A good agreement in the extremely small region of gas parameter is demonstrated. Furthermore, the ground state energy is also reattained and discussed.

KW - Bose gas

KW - Condensed fraction

KW - Improved Hartree–Fock approximation

KW - Quantum depletion

U2 - 10.1007/s10955-022-02944-0

DO - 10.1007/s10955-022-02944-0

M3 - Journal article

AN - SCOPUS:85131717423

VL - 188

JO - Journal of Statistical Physics

JF - Journal of Statistical Physics

SN - 0022-4715

IS - 2

M1 - 16

ER -

ID: 371847588