Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Decoherence in a classically chaotic quantum system: entropy production
  and quantum--classical correspondence   We study the decoherence process for an open quantum system which is
classically chaotic (a quartic double well with harmonic driving coupled to a
sea of harmonic oscillators). We analyze the time dependence of the rate of
entropy production showing that it has two relevant regimes: For short times it
is proportional to the diffusion coefficient (fixed by the system--environment
coupling strength). For longer times (but before equilibration) it is fixed by
dynamical properties of the system (and is related to the Lyapunov exponent).
The nature of the transition time between both regimes is investigated and the
issue of quantum to classical correspondence is addressed. Finally, the impact
of the interaction with the environment on coherent tunneling is analyzed.

19
The categories of this paper are: eess
10
The categories of this paper are: q-bio
8
The categories of this paper are: hep-ex
22
The categories of this paper are: chao-dyn
34
The categories of this paper are: chem-ph
37
The categories of this paper are: supr-con
27
The categories of this paper are: comp-gas
35
The categories of this paper are: mtrl-th
18
The categories of this paper are: econ
23
The categories of this paper are: solv-int
7
The categories of this paper are: hep-th
36
The categories of this paper are: cmp-lg
0
The categories of this paper are: hep-ph
28
The categories of this paper are: alg-geom
15
The categories of this paper are: nucl-ex
20
The categories of this paper are: acc-phys