Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Quasiprobability distribution functions for finite-dimensional discrete
  phase spaces: Spin-tunneling effects in a toy model   We show how quasiprobability distribution functions defined over
$N^{2}$-dimensional discrete phase spaces can be used to treat physical systems
described by a finite space of states which exhibit spin tunneling effects.
This particular approach is then applied to the Lipkin-Meshkov-Glick model in
order to obtain the time evolution of the discrete Husimi function, and as a
by-product the energy gap for a symmetric combination of ground and first
excited states. Moreover, we also show how an angle-based potential approach
can be efficiently employed to explain qualitatively certain features of the
energy gap in terms of a spin tunneling. Entropy functionals are also discussed
in this context. Such results reinforce not only the formalism per se but also
the possibility of some future potential applications in other branches of
physics.

36
The categories of this paper are: cmp-lg
12
The categories of this paper are: nucl-th
9
The categories of this paper are: nlin
14
The categories of this paper are: math-ph
23
The categories of this paper are: solv-int
26
The categories of this paper are: bayes-an
33
The categories of this paper are: plasm-ph
7
The categories of this paper are: hep-th
35
The categories of this paper are: mtrl-th
24
The categories of this paper are: dg-ga
22
The categories of this paper are: chao-dyn
37
The categories of this paper are: supr-con
17
The categories of this paper are: q-fin
29
The categories of this paper are: funct-an
34
The categories of this paper are: chem-ph
19
The categories of this paper are: eess