Ground state energy of the two-dimensional weakly interacting Bose gas: First correction beyond Bogoliubov theory
| dc.creator | Mora, Christophe | |
| dc.creator | Castin, Yvan | |
| dc.date | 2009-01-19 | |
| dc.date | 2009-05-16 | |
| dc.date.accessioned | 2026-07-07T13:15:10Z | |
| dc.date.available | 2026-07-07T13:15:10Z | |
| dc.description | We consider the grand potential $Ω$ of a two-dimensional weakly interacting homogeneous Bose gas at zero temperature. Building on a number-conserving Bogoliubov method for a lattice model in the grand canonical ensemble, we calculate the next order term as compared to the Bogoliubov prediction, in a systematic expansion of $Ω$ in powers of the parameter measuring the weakness of the interaction. Our prediction is in very good agreement with recent Monte Carlo calculations. | |
| dc.description | 4 pages, 1 figure, published in Phys. Rev. Lett | |
| dc.identifier | https://arxiv.org/abs/0901.2943 | |
| dc.identifier | http://arxiv.org/abs/0901.2943 | |
| dc.identifier | Phys. Rev. Lett. 102, 180404 (2009) | |
| dc.identifier | doi:10.1103/PhysRevLett.102.180404 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/230400 | |
| dc.subject | Statistical Mechanics | |
| dc.title | Ground state energy of the two-dimensional weakly interacting Bose gas: First correction beyond Bogoliubov theory | |
| dc.type | text |