Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Classical description of bosonic many-body systems in terms of the
  reduced-state-of-the-field framework   We discuss compatibility between various quantum aspects of bosonic many-body
systems, relevant for quantum optics and quantum thermodynamics, and the
mesoscopic formalism of reduced state of the field (RSF). In particular, we
derive exact conditions under which Gaussian evolution can be cast into the RSF
framework. In that regard, special emphasis is put on Gaussian thermal
operations. To strengthen the link between the RSF formalism and the notion of
classicality, we prove that RSF contains no information about entanglement in
two-mode Gaussian states. For the same purpose, we show that the entropic
characterisation of RSF by means of the von Neumann entropy is qualitatively
the same as its description based on the Wehrl entropy. Based on our findings,
we endorse RSF as a tool for semi-classical treatment of bosonic many-body
phenomena.

33
The categories of this paper are: plasm-ph
18
The categories of this paper are: econ
8
The categories of this paper are: hep-ex
32
The categories of this paper are: atom-ph
27
The categories of this paper are: comp-gas
31
The categories of this paper are: ao-sci
14
The categories of this paper are: math-ph
37
The categories of this paper are: supr-con
29
The categories of this paper are: funct-an
10
The categories of this paper are: q-bio
9
The categories of this paper are: nlin
26
The categories of this paper are: bayes-an
34
The categories of this paper are: chem-ph
4
The categories of this paper are: cond-mat
17
The categories of this paper are: q-fin
19
The categories of this paper are: eess