Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Repulsive shield between polar molecules   We propose and analyze a technique that allows to suppress inelastic
collisions and simultaneously enhance elastic interactions between cold polar
molecules. The main idea is to cancel the leading dipole-dipole interaction
with a suitable combination of static electric and microwave fields in such a
way that the remaining van-der-Waals-type potential forms a three-dimensional
repulsive shield. We analyze the elastic and inelastic scattering cross
sections relevant for evaporative cooling of polar molecules and discuss the
prospect for the creation of crystalline structures.

17
The categories of this paper are: q-fin
14
The categories of this paper are: math-ph
19
The categories of this paper are: eess
3
The categories of this paper are: physics
31
The categories of this paper are: ao-sci
20
The categories of this paper are: acc-phys
27
The categories of this paper are: comp-gas
1
The categories of this paper are: cs
35
The categories of this paper are: mtrl-th
24
The categories of this paper are: dg-ga
34
The categories of this paper are: chem-ph
10
The categories of this paper are: q-bio
32
The categories of this paper are: atom-ph
12
The categories of this paper are: nucl-th
2
The categories of this paper are: math
22
The categories of this paper are: chao-dyn