Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Study of light-assisted collisions between a few cold atoms in a
  microscopic dipole trap   We study light-assisted collisions in an ensemble containing a small number
(~3) of cold Rb87 atoms trapped in a microscopic dipole trap. Using our ability
to operate with one atom exactly in the trap, we measure the one-body heating
rate associated to a near-resonant laser excitation, and we use this
measurement to extract the two-body loss rate associated to light-assisted
collisions when a few atoms are present in the trap. Our measurements indicate
that the two-body loss rate can reach surprisingly large values beta>10^{-8}
cm^{3}.s^{-1} and varies rapidly with the trap depth and the parameters of the
excitation light.

18
The categories of this paper are: econ
15
The categories of this paper are: nucl-ex
24
The categories of this paper are: dg-ga
30
The categories of this paper are: q-alg
23
The categories of this paper are: solv-int
20
The categories of this paper are: acc-phys
32
The categories of this paper are: atom-ph
28
The categories of this paper are: alg-geom
25
The categories of this paper are: patt-sol
35
The categories of this paper are: mtrl-th
6
The categories of this paper are: astro-ph
2
The categories of this paper are: math
10
The categories of this paper are: q-bio
36
The categories of this paper are: cmp-lg
16
The categories of this paper are: stat
17
The categories of this paper are: q-fin