Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: On the heat transfer across a vacuum gap mediated by Casimir force   Following a recent report on experiments it has been claimed that a phonon
heat transfer through a vacuum gap between two solids due to quantum
fluctuations had been measured. Here we make a theoretical analyzis of this
mechanism and demonstrate that the Casimir force driven heat flux is at least
15 orders of magnitude smaller than the near-field heat flux between two solids
at any given separating distance. Moreover, we provide compelling arguments
that the measures reported are no more and no less a measure of the virtual
temperatures of vibrating modes which does not allow an access to the Casimir
force driven heat flux.

16
The categories of this paper are: stat
2
The categories of this paper are: math
34
The categories of this paper are: chem-ph
36
The categories of this paper are: cmp-lg
5
The categories of this paper are: gr-qc
18
The categories of this paper are: econ
25
The categories of this paper are: patt-sol
6
The categories of this paper are: astro-ph
27
The categories of this paper are: comp-gas
17
The categories of this paper are: q-fin
7
The categories of this paper are: hep-th
19
The categories of this paper are: eess
37
The categories of this paper are: supr-con
26
The categories of this paper are: bayes-an
8
The categories of this paper are: hep-ex
33
The categories of this paper are: plasm-ph