Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Vortex precession in a rotating nonaxisymmetric trapped Bose-Einstein
  condensate   We study the precession of an off-axis straight vortex in a rotating
nonaxisymmetric harmonic trap in the Thomas-Fermi (TF) regime. A time-dependent
variational Lagrangian analysis yields the dynamical equations of the vortex
and the precessional angular velocity in two-dimensional (2D) and
three-dimensional (3D) condensates.

22
The categories of this paper are: chao-dyn
17
The categories of this paper are: q-fin
3
The categories of this paper are: physics
23
The categories of this paper are: solv-int
11
The categories of this paper are: hep-lat
26
The categories of this paper are: bayes-an
34
The categories of this paper are: chem-ph
20
The categories of this paper are: acc-phys
7
The categories of this paper are: hep-th
37
The categories of this paper are: supr-con
25
The categories of this paper are: patt-sol
14
The categories of this paper are: math-ph
24
The categories of this paper are: dg-ga
9
The categories of this paper are: nlin
18
The categories of this paper are: econ
8
The categories of this paper are: hep-ex