Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Field Oscillations in a Micromaser with Injected Atomic Coherence   The electric field in a lossless, regularly-pumped micromaser with injected
atomic coherence can undergo a period 2 oscillations in the steady state. The
field changes its value after a single atom passes through the micromaser
cavity, but returns to its original value after a second atom travels through.
We give a simple explanation for this phenomenon in terms of tangent and
cotangent states. We also examine the effect of cavity damping on this steady
state.

27
The categories of this paper are: comp-gas
6
The categories of this paper are: astro-ph
11
The categories of this paper are: hep-lat
14
The categories of this paper are: math-ph
26
The categories of this paper are: bayes-an
5
The categories of this paper are: gr-qc
10
The categories of this paper are: q-bio
7
The categories of this paper are: hep-th
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The categories of this paper are: alg-geom
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The categories of this paper are: adap-org
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The categories of this paper are: q-alg
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The categories of this paper are: econ
3
The categories of this paper are: physics
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