Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Nonlinear dynamics and energy transfer for two rotating dipoles in an
  external field: A three-dimensional analysis   We investigate the structure and the nonlinear dynamics of two rigid polar
rotors coupled through the dipole-dipole interaction in an external homogeneous
electric field. In the field-free stable head-tail configuration, an excess
energy is provided to one of the dipoles, and we explore the resulting
three-dimensional classical dynamics. This dynamics is characterized in terms
of the kinetic energy transfer between the dipoles, their orientation along the
electric field, as well as their chaotic behavior.
  The field-free energy transfer mechanism shows an abrupt transition between
equipartition and non-equipartition regimes, which
  is independent of the initial direction of rotation due to the existence of
an infinite set of equivalent manifolds. The field-dressed dynamics is highly
complex and strongly depends on the electric field strength and on the initial
conditions. In the strong field regime, the energy equipartition and chaotic
behavior dominate the dynamics.

1
The categories of this paper are: cs
18
The categories of this paper are: econ
35
The categories of this paper are: mtrl-th
33
The categories of this paper are: plasm-ph
13
The categories of this paper are: quant-ph
27
The categories of this paper are: comp-gas
4
The categories of this paper are: cond-mat
23
The categories of this paper are: solv-int
10
The categories of this paper are: q-bio
32
The categories of this paper are: atom-ph
11
The categories of this paper are: hep-lat
36
The categories of this paper are: cmp-lg
20
The categories of this paper are: acc-phys
3
The categories of this paper are: physics
19
The categories of this paper are: eess
21
The categories of this paper are: adap-org