Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Controlling atom-atom interaction at ultralow temperatures by dc
  electric fields   We propose a physical mechanism for tuning the atom-atom interaction strength
at ultra-low temperatures. In the presence of a dc electric field the
interatomic potential is changed due to the effective dipole-dipole interaction
between the polarized atoms. Detailed multi-channel scattering calculations
reveal features never before discussed for ultra-cold atomic collisions. We
demonstrate that optimal control of the effective atom-atom interactions can be
achieved under reasonable laboratory conditions. Implications of this research
on the physics of atomic Bose-Einstein condensation (BEC) and on the pursuit
for atomic degenerate fermion gases will be discussed.

36
The categories of this paper are: cmp-lg
18
The categories of this paper are: econ
0
The categories of this paper are: hep-ph
14
The categories of this paper are: math-ph
37
The categories of this paper are: supr-con
31
The categories of this paper are: ao-sci
25
The categories of this paper are: patt-sol
12
The categories of this paper are: nucl-th
22
The categories of this paper are: chao-dyn
30
The categories of this paper are: q-alg
5
The categories of this paper are: gr-qc
24
The categories of this paper are: dg-ga
15
The categories of this paper are: nucl-ex
6
The categories of this paper are: astro-ph
2
The categories of this paper are: math
28
The categories of this paper are: alg-geom