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
Documents
- Fulltext
Submitted manuscript, 337 KB, PDF document
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.
Original language | English |
---|---|
Article number | 16 |
Journal | Journal of Statistical Physics |
Volume | 188 |
Issue number | 2 |
ISSN | 0022-4715 |
DOIs | |
Publication status | Published - 2022 |
Bibliographical 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:
© 2022, The Author(s), under exclusive licence to Springer Science+Business Media, LLC, part of Springer Nature.
- Bose gas, Condensed fraction, Improved Hartree–Fock approximation, Quantum depletion
Research areas
ID: 371847588