Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Gaussian enveloped decoherence of the atomic states in quantum cavity   We revisit the decoherence of the atomic state in the resonant
Jaynes-Cummings model with the field initially being in a coherent state. We
show that the purity of the atom exhibits oscillating Gaussian dependence on
the time with a width independent of the initial atomic state. It is also shown
that when the atom and the coherent state match each other in phase, the atomic
decoherence is Gaussian time dependence.

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The categories of this paper are: hep-ph
14
The categories of this paper are: math-ph
7
The categories of this paper are: hep-th
36
The categories of this paper are: cmp-lg
35
The categories of this paper are: mtrl-th
8
The categories of this paper are: hep-ex
5
The categories of this paper are: gr-qc
23
The categories of this paper are: solv-int
19
The categories of this paper are: eess
33
The categories of this paper are: plasm-ph
15
The categories of this paper are: nucl-ex
28
The categories of this paper are: alg-geom
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The categories of this paper are: cs
31
The categories of this paper are: ao-sci
3
The categories of this paper are: physics
26
The categories of this paper are: bayes-an