Collisional effects on the collective laser cooling . of trapped bosonic gases |
| |
Authors: | L Santos M Lewenstein |
| |
Institution: | Institut für Theoretische Physik, Universit?t Hannover, Appelstr. 2, D-30167 Hannover, Germany, DE
|
| |
Abstract: | We analyse the effects of atom–atom collisions on a collective laser cooling scheme. We derive a quantum master equation which
describes the laser cooling in presence of atom–atom collisions in the weak-condensation regime. Using such equation, we perform
Monte Carlo simulations of the population dynamics in one and three dimensions. We observe that the ground-state laser-induced
condensation is maintained in the presence of collisions. Laser cooling causes a transition from a Bose–Einstein distribution
describing collisionally induced equilibrium, to a distribution with an effective zero temperature. We analyse also the effects
of atom–atom collisions on the cooling into an excited state of the trap.
Received: 18 June 1999 / Revised version: 24 September 1999 / Published online: 10 November 1999 |
| |
Keywords: | PACS: 32 80 Pj 42 50 Vk |
本文献已被 SpringerLink 等数据库收录! |
|