Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Evolution of open quantum systems: time scales, stochastic and
  continuous processes   The study of the physical properties of open quantum systems is at the heart
of many present investigations which aim to describe their dynamical evolution,
on theoretical ground and through physical realizations. Here we develop a
presentation of different aspects which characterize these systems and confront
different physical situations which can be realized leading to systems which
experience Markovian, non-Markovian, divisible or non-divisible interactions
with the environments to which they are dynamically coupled. We aim to show how
different approaches describe the evolution of quantum systems subject to
different types of interactions with their environments.

7
The categories of this paper are: hep-th
22
The categories of this paper are: chao-dyn
5
The categories of this paper are: gr-qc
2
The categories of this paper are: math
34
The categories of this paper are: chem-ph
29
The categories of this paper are: funct-an
12
The categories of this paper are: nucl-th
35
The categories of this paper are: mtrl-th
3
The categories of this paper are: physics
1
The categories of this paper are: cs
0
The categories of this paper are: hep-ph
32
The categories of this paper are: atom-ph
20
The categories of this paper are: acc-phys
27
The categories of this paper are: comp-gas
19
The categories of this paper are: eess
16
The categories of this paper are: stat