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.
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Received: 18 June 1999 / Revised version: 24 September 1999 / Published online: 10 November 1999
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Santos, L., Lewenstein, M. Collisional effects on the collective laser cooling . of trapped bosonic gases. Appl Phys B 69, 363–371 (1999). https://doi.org/10.1007/s003400050821
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DOI: https://doi.org/10.1007/s003400050821