Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Periodic control laws for bilinear quantum systems with discrete
  spectrum   We provide bounds on the error between dynamics of an infinite dimensional
bilinear Schr\"odinger equation and of its finite dimensional Galerkin
approximations. Standard averaging methods are used on the finite dimensional
approximations to obtain constructive controllability results. As an
illustration, the methods are applied on a model of a 2D rotating molecule.

31
The categories of this paper are: ao-sci
5
The categories of this paper are: gr-qc
29
The categories of this paper are: funct-an
24
The categories of this paper are: dg-ga
21
The categories of this paper are: adap-org
26
The categories of this paper are: bayes-an
15
The categories of this paper are: nucl-ex
28
The categories of this paper are: alg-geom
0
The categories of this paper are: hep-ph
3
The categories of this paper are: physics
36
The categories of this paper are: cmp-lg
37
The categories of this paper are: supr-con
6
The categories of this paper are: astro-ph
32
The categories of this paper are: atom-ph
27
The categories of this paper are: comp-gas
18
The categories of this paper are: econ