Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Manipulating the scattering length of a Bose - Einstein condensate in an
  amplitude - modulated optical lattice   The scattering length in a BEC confined in an amplitude - modulated optical
lattice can be manipulated by the modulation strength. Two standing laser waves
of main and sideband frequencies of an optical lattice induce a Raman
transition; due to resonant Raman driving the effective scattering length
depends on the modulation strength and the detuning from resonance and can be
tuned to a given value.

27
The categories of this paper are: comp-gas
5
The categories of this paper are: gr-qc
20
The categories of this paper are: acc-phys
37
The categories of this paper are: supr-con
0
The categories of this paper are: hep-ph
29
The categories of this paper are: funct-an
21
The categories of this paper are: adap-org
7
The categories of this paper are: hep-th
8
The categories of this paper are: hep-ex
10
The categories of this paper are: q-bio
12
The categories of this paper are: nucl-th
18
The categories of this paper are: econ
26
The categories of this paper are: bayes-an
23
The categories of this paper are: solv-int
14
The categories of this paper are: math-ph
6
The categories of this paper are: astro-ph