Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Dipole emission and coherent transport in random media II. Density of
  states vs. index of refraction   This is the second of a series of papers devoted to develop a microscopical
approach to the dipole emission process and its relation to coherent transport
in random media. In this Letter, we deduce a relation between the transverse
decay rate of an emitter in a virtual cavity and the complex refraction index
of the host medium. We argue on the possibility of a criterion for
inhibition/enhancement of spontaneous emission in function of the transition
frequency and the correlation length of the host scatterers. In addition, we
study the radiative/non-radiative nature of the net power emission through a
microscopical analysis of the scattering events involved. This study reveals
essential discrepancies with previous interpretations.

27
The categories of this paper are: comp-gas
21
The categories of this paper are: adap-org
31
The categories of this paper are: ao-sci
5
The categories of this paper are: gr-qc
7
The categories of this paper are: hep-th
12
The categories of this paper are: nucl-th
30
The categories of this paper are: q-alg
34
The categories of this paper are: chem-ph
36
The categories of this paper are: cmp-lg
16
The categories of this paper are: stat
32
The categories of this paper are: atom-ph
19
The categories of this paper are: eess
2
The categories of this paper are: math
24
The categories of this paper are: dg-ga
6
The categories of this paper are: astro-ph
18
The categories of this paper are: econ