Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Optimizing the efficiency of evaporative cooling in optical dipole traps   We present a combined computational and experimental study to optimize the
efficiency of evaporative cooling for atoms in optical dipole traps. By
employing a kinetic model of evaporation, we provide a strategy for determining
the optimal relation between atom temperature, trap depth, and average trap
frequency during evaporation given experimental initial conditions. We then
experimentally implement a highly efficient evaporation process in an optical
dipole trap, showing excellent agreement between the theory and experiment.
This method has allowed the creation of pure Bose-Einstein condensates of
$^{87}$Rb with 2$\times 10^4$ atoms starting from only $5\times 10^5$ atoms
initially loaded in the optical dipole trap, achieving an evaporation
efficiency, $\gamma_{eff}$, of 4.0 during evaporation.

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The categories of this paper are: nlin
29
The categories of this paper are: funct-an
32
The categories of this paper are: atom-ph
35
The categories of this paper are: mtrl-th
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The categories of this paper are: astro-ph
30
The categories of this paper are: q-alg
1
The categories of this paper are: cs
15
The categories of this paper are: nucl-ex
2
The categories of this paper are: math
36
The categories of this paper are: cmp-lg
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The categories of this paper are: adap-org
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The categories of this paper are: gr-qc
12
The categories of this paper are: nucl-th
20
The categories of this paper are: acc-phys
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The categories of this paper are: alg-geom
14
The categories of this paper are: math-ph