Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Path Integral Estimates of the Quantum Fluctuations of the Relative
  Soliton-Soliton Velocity in a Gross-Pitevskii Breather   In this paper, the quantum fluctuations of the relative velocity of
constituent solitons in a Gross-Pitaevskii breather are studied. The breather
is confined in a weak harmonic trap. These fluctuations are
monitored,indirectly, using a two-body correlation function measured at a
quarter of the harmonic period after the breather creation. The results of an
ab initio quantum Monte Carlo calculations, based on the Feynman-Kac path
integration method, are compared with the analytical predictions using the
recently suggested approach within the Bogoliubov approximation, and a good
agreement is obtained.

8
The categories of this paper are: hep-ex
24
The categories of this paper are: dg-ga
14
The categories of this paper are: math-ph
20
The categories of this paper are: acc-phys
1
The categories of this paper are: cs
16
The categories of this paper are: stat
26
The categories of this paper are: bayes-an
34
The categories of this paper are: chem-ph
12
The categories of this paper are: nucl-th
35
The categories of this paper are: mtrl-th
27
The categories of this paper are: comp-gas
0
The categories of this paper are: hep-ph
4
The categories of this paper are: cond-mat
17
The categories of this paper are: q-fin
3
The categories of this paper are: physics
30
The categories of this paper are: q-alg