Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: The emission of electromagnetic radiation from a quantum system
  interacting with an external noise: A general result   We compute the spectrum of emitted radiation by a generic quantum system
interacting with an external classic noise. Our motivation is to understand
this phenomenon within the framework of collapse models. However the
computation is general and applies practically to any situation where a quantum
system interacts with a noise. The computation is carried out at a perturbative
level. This poses problems concerning the correct way of performing the
analysis, as repeatedly discussed in the literature. We will clarify also this
issue.

36
The categories of this paper are: cmp-lg
22
The categories of this paper are: chao-dyn
33
The categories of this paper are: plasm-ph
1
The categories of this paper are: cs
34
The categories of this paper are: chem-ph
16
The categories of this paper are: stat
24
The categories of this paper are: dg-ga
27
The categories of this paper are: comp-gas
18
The categories of this paper are: econ
25
The categories of this paper are: patt-sol
37
The categories of this paper are: supr-con
31
The categories of this paper are: ao-sci
9
The categories of this paper are: nlin
23
The categories of this paper are: solv-int
19
The categories of this paper are: eess
30
The categories of this paper are: q-alg