Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Dissipative dynamics of a quantum two-state system in presence of
  nonequilibrium quantum noise   We analyze the real-time dynamics of a quantum two-state system in the
presence of nonequilibrium quantum fluctuations. The latter are generated by a
coupling of the two-state system to a single electronic level of a quantum dot
which carries a nonequilibrium tunneling current. We restrict to the sequential
tunneling regime and calculate the dynamics of the two-state system, of the dot
population, and of the nonequilibrium charge current on the basis of a
diagrammatic perturbative method valid for a weak tunneling coupling. We find a
nontrivial dependence of the relaxation and dephasing rates of the two-state
system due to the nonequilibrium fluctuations which is directly linked to the
structure of the unperturbed central system. In addition, a
Heisenberg-Langevin-equation of motion allows us to calculate the correlation
function of the nonequilibrium fluctuations. By this, we obtain a generalized
nonequilibrium fluctuation relation which includes the equilibrium
fluctuation-dissipation theorem. A straightforward extension to the case with a
time-periodic ac voltage is shown.

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The categories of this paper are: hep-ex
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The categories of this paper are: hep-ph
20
The categories of this paper are: acc-phys
10
The categories of this paper are: q-bio
33
The categories of this paper are: plasm-ph
13
The categories of this paper are: quant-ph
23
The categories of this paper are: solv-int
21
The categories of this paper are: adap-org
16
The categories of this paper are: stat
26
The categories of this paper are: bayes-an
36
The categories of this paper are: cmp-lg
15
The categories of this paper are: nucl-ex
6
The categories of this paper are: astro-ph
14
The categories of this paper are: math-ph
17
The categories of this paper are: q-fin
27
The categories of this paper are: comp-gas