Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Controlling the sense of molecular rotation   We introduce a new scheme for controlling the sense of molecular rotation. By
varying the polarization and the delay between two ultrashort laser pulses, we
induce unidirectional molecular rotation, thereby forcing the molecules to
rotate clockwise/counterclockwise under field-free conditions. We show that
unidirectionally rotating molecules are confined to the plane defined by the
two polarization vectors of the pulses, which leads to a permanent anisotropy
in the molecular angular distribution. The latter may be useful for controlling
collisional cross-sections and optical and kinetic processes in molecular
gases. We discuss the application of this control scheme to individual
components within a molecular mixture in a selective manner.

5
The categories of this paper are: gr-qc
32
The categories of this paper are: atom-ph
36
The categories of this paper are: cmp-lg
35
The categories of this paper are: mtrl-th
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The categories of this paper are: hep-th
6
The categories of this paper are: astro-ph
16
The categories of this paper are: stat
37
The categories of this paper are: supr-con
15
The categories of this paper are: nucl-ex
10
The categories of this paper are: q-bio
33
The categories of this paper are: plasm-ph
1
The categories of this paper are: cs
11
The categories of this paper are: hep-lat
27
The categories of this paper are: comp-gas
24
The categories of this paper are: dg-ga
22
The categories of this paper are: chao-dyn