Correlation effects in the ground state of trapped atomic Bose gases
| dc.creator | Purwanto, Wirawan | |
| dc.creator | Zhang, Shiwei | |
| dc.date | 2005-06-09 | |
| dc.date.accessioned | 2026-07-07T06:26:48Z | |
| dc.date.available | 2026-07-07T06:26:48Z | |
| dc.description | We study the effects of many-body correlations in trapped ultracold atomic Bose gases. We calculate the ground state of the gas using a ground-state auxiliary-field quantum Monte Carlo (QMC) method [Phys. Rev. E 70, 056702 (2004)]. We examine the properties of the gas, such as the energetics, condensate fraction, real-space density, and momentum distribution, as a function of the number of particles and the scattering length. We find that the mean-field Gross-Pitaevskii (GP) approach gives qualitatively incorrect result of the kinetic energy as a function of the scattering length. We present detailed QMC data for the various quantities, and discuss the behavior of GP, modified GP, and the Bogoliubov method under a local density approximation. | |
| dc.description | 11 pages, 12 figures, as typeset using REVTEX4. Submitted to Phys. Rev. A | |
| dc.identifier | https://arxiv.org/abs/cond-mat/0506219 | |
| dc.identifier | http://arxiv.org/abs/cond-mat/0506219 | |
| dc.identifier | Phys. Rev. A 72, 053610 (2005) | |
| dc.identifier | doi:10.1103/PhysRevA.72.053610 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/97219 | |
| dc.subject | Other Condensed Matter | |
| dc.title | Correlation effects in the ground state of trapped atomic Bose gases | |
| dc.type | text |