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@ARTICLE{Novotny:128123,
author = {Novotny, M A and Guerra, M and De Raedt, H. and Michielsen,
Kristel and Jin, Fengping},
title = {{A}n {E}fficient {A}lgorithm for {S}imulating the
{R}eal-{T}ime {Q}uantum {D}ynamics of a {S}ingle {S}pin-1/2
{C}oupled to {S}pecific {S}pin-1/2 {B}aths},
journal = {Journal of physics / Conference Series},
volume = {402},
address = {Bristol},
publisher = {IOP Publ.},
reportid = {FZJ-2012-01018},
pages = {012019},
year = {2012},
abstract = {An efficient algorithm for the computation of the real-time
dependence of a single quantum spin-1/2 coupled to a
specific set of quantum spin-1/2 baths is presented. The
specific spin baths have couplings only with the spin
operators Sx between bath spins and the central spin. We
calculate spin expectation values, the quantum purity, the
von Neumann entropy, and the off-diagonal components of the
reduced density matrix for the central spin once the bath
spins have been traced out. The algorithm does not require
the storage of any vector larger than of size 2, even though
the size of the Hilbert space is 2N+1, where N is the number
of bath spins. Results are presented for the central spin
connected to different sizes and types of spin baths, and
for different initial states for the central spin and for
the bath spins. Results are also compared to those for more
general baths.},
cin = {JSC},
ddc = {530},
cid = {I:(DE-Juel1)JSC-20090406},
pnm = {411 - Computational Science and Mathematical Methods
(POF2-411)},
pid = {G:(DE-HGF)POF2-411},
typ = {PUB:(DE-HGF)16},
UT = {WOS:000314709800018},
doi = {10.1088/1742-6596/402/1/012019},
url = {https://juser.fz-juelich.de/record/128123},
}