Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Collisional effects on the collective laser cooling of trapped bosonic
  gases   We analyse the effects of atom-atom collisions on 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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The categories of this paper are: gr-qc
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The categories of this paper are: econ
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The categories of this paper are: hep-th
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The categories of this paper are: nlin
30
The categories of this paper are: q-alg
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The categories of this paper are: acc-phys
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The categories of this paper are: q-fin
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The categories of this paper are: funct-an
34
The categories of this paper are: chem-ph
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The categories of this paper are: cond-mat
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The categories of this paper are: ao-sci
25
The categories of this paper are: patt-sol
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The categories of this paper are: comp-gas
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The categories of this paper are: mtrl-th
26
The categories of this paper are: bayes-an
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The categories of this paper are: cs