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@ARTICLE{Baumgrtel:835945,
author = {Baumgärtel, M. and Ghanem, K. and Kiani, A. and Koch, E.
and Pavarini, E. and Sims, H. and Zhang, G.},
title = {{M}assively parallel simulations of strong electronic
correlations: {R}ealistic {C}oulomb vertex and multiplet
effects},
journal = {European physical journal special topics},
volume = {226},
number = {11},
issn = {1951-6401},
address = {Berlin},
publisher = {Springer},
reportid = {FZJ-2017-05077},
pages = {2525 - 2547},
year = {2017},
abstract = {We discuss the efficient implementation of general impurity
solvers for dynamical mean-field theory. We show that both
Lanczos and quantum Monte Carlo in different flavors
(Hirsch-Fye, continuous-time hybridization- and
interaction-expansion) exhibit excellent scaling on
massively parallel supercomputers. We apply these algorithms
to simulate realistic model Hamiltonians including the full
Coulomb vertex, crystal-field splitting, and spin-orbit
interaction. We discuss how to remove the sign problem in
the presence of non-diagonal crystal-field and hybridization
matrices. We show how to extract the physically observable
quantities from imaginary time data, in particular
correlation functions and susceptibilities. Finally, we
present benchmarks and applications for representative
correlated systems.},
cin = {IAS-3 / JSC},
ddc = {530},
cid = {I:(DE-Juel1)IAS-3-20090406 / I:(DE-Juel1)JSC-20090406},
pnm = {144 - Controlling Collective States (POF3-144) / 511 -
Computational Science and Mathematical Methods (POF3-511) /
AICES Aachen Institute for Advanced Study in Computational
Engineering Science (AICES-AACHEN-20170406)},
pid = {G:(DE-HGF)POF3-144 / G:(DE-HGF)POF3-511 /
G:(DE-Juel1)AICES-AACHEN-20170406},
typ = {PUB:(DE-HGF)16},
UT = {WOS:000404918800006},
doi = {10.1140/epjst/e2016-60311-8},
url = {https://juser.fz-juelich.de/record/835945},
}