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@ARTICLE{Lichtenstein:812018,
      author       = {Lichtenstein, J. and de la Peña, D. Sánchez and Rohe, D.
                      and Di Napoli, E. and Honerkamp, C. and Maier, S. A.},
      title        = {{H}igh-performance functional {R}enormalization {G}roup
                      calculations for interacting fermions},
      journal      = {Computer physics communications},
      volume       = {213},
      issn         = {0010-4655},
      address      = {Amsterdam},
      publisher    = {North Holland Publ. Co.},
      reportid     = {FZJ-2016-04315},
      pages        = {100-110},
      year         = {2017},
      abstract     = {We derive a novel computational scheme for functional
                      Renormalization Group (fRG) calculations for interacting
                      fermions on 2D lattices. The scheme is based on the exchange
                      parametrization fRG for the two-fermion interaction, with
                      additional insertions of truncated partitions of unity.
                      These insertions decouple the fermionic propagators from the
                      exchange propagators and lead to a separation of the
                      underlying equations. We demonstrate that this separation is
                      numerically advantageous and may pave the way for refined,
                      large-scale computational investigations even in the case of
                      complex multiband systems. Furthermore, on the basis of
                      speedup data gained from our implementation, it is shown
                      that this new variant facilitates efficient calculations on
                      a large number of multi-core CPUs. We apply the scheme to
                      the $t$,$t'$ Hubbard model on a square lattice to analyze
                      the convergence of the results with the bond length of the
                      truncation of the partition of unity. In most parameter
                      areas, a fast convergence can be observed. Finally, we
                      compare to previous results in order to relate our approach
                      to other fRG studies.},
      cin          = {JSC / JARA-FIT / JARA-HPC},
      ddc          = {004},
      cid          = {I:(DE-Juel1)JSC-20090406 / $I:(DE-82)080009_20140620$ /
                      $I:(DE-82)080012_20140620$},
      pnm          = {511 - Computational Science and Mathematical Methods
                      (POF3-511) / High-performance functional renormalization
                      group for two-dimensional materials $(jhpc26_20151101)$ /
                      Simulation and Data Laboratory Quantum Materials (SDLQM)
                      (SDLQM) / Simulation and Data Laboratory Quantum Materials
                      (SDLQM) (SDLQM)},
      pid          = {G:(DE-HGF)POF3-511 / $G:(DE-Juel1)jhpc26_20151101$ /
                      G:(DE-Juel1)SDLQM / G:(DE-Juel1)SDLQM},
      typ          = {PUB:(DE-HGF)16},
      eprint       = {1604.06296},
      howpublished = {arXiv:1604.06296},
      archivePrefix = {arXiv},
      SLACcitation = {$\%\%CITATION$ = $arXiv:1604.06296;\%\%$},
      UT           = {WOS:000393630800011},
      doi          = {10.1016/j.cpc.2016.12.013},
      url          = {https://juser.fz-juelich.de/record/812018},
}