Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Response theory for nonequilibrium steady-states of open quantum systems   We introduce a response theory for open quantum systems within nonequilibrium
steady-states subject to a Hamiltonian perturbation. Working in the weak
system-bath coupling regime, our results are derived within the
Lindblad-Gorini-Kossakowski-Sudarshan formalism. We find that the response of
the system to a small perturbation is not simply related to a correlation
function within the system, unlike traditional linear response theory in closed
systems or expectations from the fluctuation-dissipation theorem. In limiting
cases, when the perturbation is small relative to the coupling to the
surroundings or when it does not lead to a change of the eigenstructure of the
system, a perturbative expansion exists where the response function is related
to a sum of a system correlation functions and additional forces induced by the
surroundings. Away from these limiting regimes however, the secular
approximation results in a singular response that cannot be captured within the
traditional approach, but can be described by reverting to a microscopic
Hamiltonian description. These findings are illustrated by explicit
calculations in coupled qubits and anharmonic oscillators in contact with
bosonic baths at different temperatures.

19
The categories of this paper are: eess
31
The categories of this paper are: ao-sci
12
The categories of this paper are: nucl-th
8
The categories of this paper are: hep-ex
36
The categories of this paper are: cmp-lg
35
The categories of this paper are: mtrl-th
26
The categories of this paper are: bayes-an
7
The categories of this paper are: hep-th
33
The categories of this paper are: plasm-ph
25
The categories of this paper are: patt-sol
6
The categories of this paper are: astro-ph
14
The categories of this paper are: math-ph
15
The categories of this paper are: nucl-ex
21
The categories of this paper are: adap-org
5
The categories of this paper are: gr-qc
0
The categories of this paper are: hep-ph