Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Strongly coupled quantum heat machines   Quantum heat machines (QHMs) models generally assume a weak coupling to the
baths. This supposition is grounded in the separability principle between
systems and allows the derivation of the evolution equation for this case. In
the weak coupling regime, the machine's output is limited by the coupling
strength, restricting their application. Seeking to overcome this limitation,
we here analyze QHMs in the virtually unexplored strong coupling regime, where
separability, as well as other standard thermodynamic assumptions, may no
longer hold. We show that strongly coupled QHMs may be as efficient as their
weakly coupled counterparts. In addition, we find a novel turnover behavior
where their output saturates and disappears in the limit of ultra-strong
coupling.

0
The categories of this paper are: hep-ph
5
The categories of this paper are: gr-qc
8
The categories of this paper are: hep-ex
9
The categories of this paper are: nlin
35
The categories of this paper are: mtrl-th
21
The categories of this paper are: adap-org
10
The categories of this paper are: q-bio
16
The categories of this paper are: stat
14
The categories of this paper are: math-ph
28
The categories of this paper are: alg-geom
22
The categories of this paper are: chao-dyn
27
The categories of this paper are: comp-gas
17
The categories of this paper are: q-fin
36
The categories of this paper are: cmp-lg
29
The categories of this paper are: funct-an
19
The categories of this paper are: eess