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@ARTICLE{Zhao:817802,
author = {Zhao, P. and De Raedt, H. and Miyashita, S. and Jin, F. and
Michielsen, K.},
title = {{D}ynamics of open quantum spin systems: {A}n assessment of
the quantum master equation approach},
journal = {Physical review / E},
volume = {94},
number = {2},
issn = {1063-651X},
address = {Woodbury, NY},
publisher = {Inst.},
reportid = {FZJ-2016-04441},
pages = {022126},
year = {2016},
abstract = {Data of the numerical solution of the time-dependent
Schrödinger equation of a system containing one spin-12
particle interacting with a bath of up to 32 spin-12
particles is used to construct a Markovian quantum master
equation describing the dynamics of the system spin. The
procedure of obtaining this quantum master equation, which
takes the form of a Bloch equation with time-independent
coefficients, accounts for all non-Markovian effects
inasmuch the general structure of the quantum master
equation allows. Our simulation results show that, with a
few rather exotic exceptions, the Bloch-type equation with
time-independent coefficients provides a simple and accurate
description of the dynamics of a spin-12 particle in contact
with a thermal bath. A calculation of the coefficients that
appear in the Redfield master equation in the Markovian
limit shows that this perturbatively derived equation
quantitatively differs from the numerically estimated
Markovian master equation, the results of which agree very
well with the solution of the time-dependent Schrödinger
equation.},
cin = {JSC},
ddc = {530},
cid = {I:(DE-Juel1)JSC-20090406},
pnm = {511 - Computational Science and Mathematical Methods
(POF3-511)},
pid = {G:(DE-HGF)POF3-511},
typ = {PUB:(DE-HGF)16},
UT = {WOS:000381607300002},
pubmed = {pmid:27627265},
doi = {10.1103/PhysRevE.94.022126},
url = {https://juser.fz-juelich.de/record/817802},
}