Beyond Lee-Huang-Yang description of self-bound Bose mixtures
We investigate the properties of self-bound ultradilute Bose-Bose mixtures, beyond the Lee-Huang-Yang description. Our approach is based on the determination of the beyond mean-field corrections to the phonon modes of the mixture in a self-consistent way and calculation of the associated equation...
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| Format: | Article |
| Language: | English |
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SciPost
2020-08-01
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| Series: | SciPost Physics |
| Online Access: | https://scipost.org/SciPostPhys.9.2.020 |
| _version_ | 1818108613569282048 |
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| author | Miki Ota, Grigori E. Astrakharchik |
| author_facet | Miki Ota, Grigori E. Astrakharchik |
| author_sort | Miki Ota, Grigori E. Astrakharchik |
| collection | DOAJ |
| description | We investigate the properties of self-bound ultradilute Bose-Bose mixtures,
beyond the Lee-Huang-Yang description. Our approach is based on the
determination of the beyond mean-field corrections to the phonon modes of the
mixture in a self-consistent way and calculation of the associated equation of
state. The newly obtained ground state energies show excellent agreement with
recent quantum Monte Carlo calculations, providing a simple and accurate
description of the self-bound mixtures with contact type interaction. We
further show numerical results for the equilibrium properties of the finite
size droplet, by adjusting the Gross-Pitaevskii equation. Our analysis is
extended to the one-dimensional mixtures where an excellent agreement with
quantum Monte Carlo predictions is found for the equilibrium densities.
Finally, we discuss the effects of temperature on the stability of the liquid
phase. |
| first_indexed | 2024-12-11T02:18:09Z |
| format | Article |
| id | doaj.art-fc636fb193eb4c1fa286e8dc200bbdf6 |
| institution | Directory Open Access Journal |
| issn | 2542-4653 |
| language | English |
| last_indexed | 2024-12-11T02:18:09Z |
| publishDate | 2020-08-01 |
| publisher | SciPost |
| record_format | Article |
| series | SciPost Physics |
| spelling | doaj.art-fc636fb193eb4c1fa286e8dc200bbdf62022-12-22T01:24:08ZengSciPostSciPost Physics2542-46532020-08-019202010.21468/SciPostPhys.9.2.020Beyond Lee-Huang-Yang description of self-bound Bose mixturesMiki Ota, Grigori E. AstrakharchikWe investigate the properties of self-bound ultradilute Bose-Bose mixtures, beyond the Lee-Huang-Yang description. Our approach is based on the determination of the beyond mean-field corrections to the phonon modes of the mixture in a self-consistent way and calculation of the associated equation of state. The newly obtained ground state energies show excellent agreement with recent quantum Monte Carlo calculations, providing a simple and accurate description of the self-bound mixtures with contact type interaction. We further show numerical results for the equilibrium properties of the finite size droplet, by adjusting the Gross-Pitaevskii equation. Our analysis is extended to the one-dimensional mixtures where an excellent agreement with quantum Monte Carlo predictions is found for the equilibrium densities. Finally, we discuss the effects of temperature on the stability of the liquid phase.https://scipost.org/SciPostPhys.9.2.020 |
| spellingShingle | Miki Ota, Grigori E. Astrakharchik Beyond Lee-Huang-Yang description of self-bound Bose mixtures SciPost Physics |
| title | Beyond Lee-Huang-Yang description of self-bound Bose mixtures |
| title_full | Beyond Lee-Huang-Yang description of self-bound Bose mixtures |
| title_fullStr | Beyond Lee-Huang-Yang description of self-bound Bose mixtures |
| title_full_unstemmed | Beyond Lee-Huang-Yang description of self-bound Bose mixtures |
| title_short | Beyond Lee-Huang-Yang description of self-bound Bose mixtures |
| title_sort | beyond lee huang yang description of self bound bose mixtures |
| url | https://scipost.org/SciPostPhys.9.2.020 |
| work_keys_str_mv | AT mikiotagrigorieastrakharchik beyondleehuangyangdescriptionofselfboundbosemixtures |