Ground-state properties of a dilute homogeneous Bose gas of hard disks in two dimensions
The energy and structure of a dilute hard-disks Bose gas are studied in the framework of a variational many-body approach based on a Jastrow correlated ground-state wave function. The asymptotic behaviors of the radial distribution function and the one-body density matrix are analyzed after solving...
| Autores: | , , |
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| Tipo de recurso: | artículo |
| Fecha de publicación: | 2005 |
| País: | España |
| Institución: | Universitat Politècnica de Catalunya (UPC) |
| Repositorio: | UPCommons. Portal del coneixement obert de la UPC |
| Idioma: | inglés |
| OAI Identifier: | oai:upcommons.upc.edu:2117/380630 |
| Acceso en línea: | https://hdl.handle.net/2117/380630 https://dx.doi.org/10.1103/PhysRevA.71.033615 |
| Access Level: | acceso abierto |
| Palabra clave: | Bose-Einstein condensation Bose gas Condensació de Bose-Einstein Àrees temàtiques de la UPC::Física |
| Sumario: | The energy and structure of a dilute hard-disks Bose gas are studied in the framework of a variational many-body approach based on a Jastrow correlated ground-state wave function. The asymptotic behaviors of the radial distribution function and the one-body density matrix are analyzed after solving the Euler equation obtained by a free minimization of the hypernetted chain energy functional. Our results show important deviations from those of the available low density expansions, already at gas parameter values x~0.001. The condensate fraction in 2D is also computed and found generally lower than the 3D one at the same x. |
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