Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Heat engines at optimal power: Low-dissipation versus endoreversible
  model   Low-dissipation model and the endoreversible model of heat engines are two of
the most commonly studied models of machines in finite-time thermodynamics. In
this paper, we compare the performance characteristics of these two models
under optimal power output. We point out a basic equivalence between them, in
the linear response regime.

23
The categories of this paper are: solv-int
30
The categories of this paper are: q-alg
6
The categories of this paper are: astro-ph
25
The categories of this paper are: patt-sol
31
The categories of this paper are: ao-sci
37
The categories of this paper are: supr-con
36
The categories of this paper are: cmp-lg
27
The categories of this paper are: comp-gas
1
The categories of this paper are: cs
8
The categories of this paper are: hep-ex
24
The categories of this paper are: dg-ga
13
The categories of this paper are: quant-ph
10
The categories of this paper are: q-bio
19
The categories of this paper are: eess
21
The categories of this paper are: adap-org
17
The categories of this paper are: q-fin