Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Quantized dynamics in closed quantum systems   We propose an approach to process data from interferometric measurements on a
closed quantum system at random times. For this purpose a time correlation
matrix is introduced which enables us to extract dynamical properties of the
quantum system. After defining a generalized expectation value we obtain a
distribution of time scales, an average transition time and a correlation time.
A classical limit exists which is separated from the quantum fluctuations. The
latter are characterized by resonances associated with poles of the generalized
expectation value. Its analytic behavior is studied and some generic properties
are linked to a quantized Berry phase.

4
The categories of this paper are: cond-mat
7
The categories of this paper are: hep-th
5
The categories of this paper are: gr-qc
15
The categories of this paper are: nucl-ex
23
The categories of this paper are: solv-int
18
The categories of this paper are: econ
33
The categories of this paper are: plasm-ph
32
The categories of this paper are: atom-ph
14
The categories of this paper are: math-ph
34
The categories of this paper are: chem-ph
37
The categories of this paper are: supr-con
1
The categories of this paper are: cs
16
The categories of this paper are: stat
12
The categories of this paper are: nucl-th
9
The categories of this paper are: nlin
3
The categories of this paper are: physics