Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: The temporal coherence of a photon condensate: A quantum trajectory
  description   In order to study the temporal coherence of a single-mode dye-cavity photon
condensate, a model is developed for the dynamics which treats the condensate
mode on a quantum-mechanical level. The effects of driving-dissipation and Kerr
interactions on the number fluctuations are studied analytically and
numerically, including the finding of a long-$\tau$ antibunching effect.
Depending on the interaction strength, we quantitatively observe an exponential
Schawlow-Townes-like decay or Gaussian Henry-like decay of phase correlations.
The adequacy of a heuristic phasor model originating from laser physics in
describing number and phase dynamics is validated within the experimentally
relevant parameter regime. The ratio of the first and second order coherence
times is shown to be inversely proportional to the number fluctuations, with a
prefactor that varies smoothly throughout the crossover between canonical and
grandcanonical statistics.

32
The categories of this paper are: atom-ph
29
The categories of this paper are: funct-an
18
The categories of this paper are: econ
26
The categories of this paper are: bayes-an
6
The categories of this paper are: astro-ph
21
The categories of this paper are: adap-org
24
The categories of this paper are: dg-ga
19
The categories of this paper are: eess
35
The categories of this paper are: mtrl-th
2
The categories of this paper are: math
3
The categories of this paper are: physics
34
The categories of this paper are: chem-ph
27
The categories of this paper are: comp-gas
25
The categories of this paper are: patt-sol
10
The categories of this paper are: q-bio
16
The categories of this paper are: stat