Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Metastable decoherence-free subspace and pointer states in mesoscopic
  quantum systems   Two initially correlated coherent states, each interacting with its own
independent dissipative environment exhibit a sudden transition from classical
to quantum decoherence. This change in the dynamics is a turning point in the
decoherence, in the sense that depending on the average number of photons of
each cavity, decoherence can even be suppressed. Indeed, the quantum state is
time-independent for a time span in the mesoscopic regime, revealing a
decoherence-free subspace. Furthermore, the absence of decoherence is
manifested in the apparition of a metastable pointer state basis.

19
The categories of this paper are: eess
18
The categories of this paper are: econ
3
The categories of this paper are: physics
31
The categories of this paper are: ao-sci
5
The categories of this paper are: gr-qc
16
The categories of this paper are: stat
35
The categories of this paper are: mtrl-th
9
The categories of this paper are: nlin
33
The categories of this paper are: plasm-ph
22
The categories of this paper are: chao-dyn
7
The categories of this paper are: hep-th
26
The categories of this paper are: bayes-an
23
The categories of this paper are: solv-int
2
The categories of this paper are: math
1
The categories of this paper are: cs
29
The categories of this paper are: funct-an