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@INPROCEEDINGS{Gntgen:1037677,
      author       = {Gäntgen, Christoph and Berkowitz, Evan and Luu, Tom and
                      Ostmeyer, Johann and Rodekamp, Marcel},
      title        = {{R}educing the {S}ign {P}roblem with simple {C}ontour
                      {D}eformation},
      address      = {Trieste, Italy},
      publisher    = {Sissa Medialab Trieste},
      reportid     = {FZJ-2025-00840},
      series       = {Proceedings of The 40th International Symposium on Lattice
                      Field Theory — PoS(LATTICE2023)},
      pages        = {9p.},
      year         = {2024},
      abstract     = {We apply constant imaginary offsets to the path integral
                      for a reduction of the sign problem in theHubbard model.
                      These simple transformations enhance the quality of results
                      from HMCcalculations without compromising the speed of the
                      algorithm. This method enables us to efficientlycalculate
                      systems that are otherwise inaccessible due to a severe sign
                      problem. To support this claim,we present observables of the
                      C20 and C60 fullerenes. Furthermore, we demonstrate that at
                      a certainoffset, the sign problem is completely lifted in
                      the limit of large chemical potential.},
      month         = {Jul},
      date          = {2023-07-31},
      organization  = {The 40th International Symposium on
                       Lattice Field Theory, Fermi National
                       Accelerator Laboratory (USA), 31 Jul
                       2023 - 4 Aug 2024},
      cin          = {JSC / IAS-4},
      cid          = {I:(DE-Juel1)JSC-20090406 / I:(DE-Juel1)IAS-4-20090406},
      pnm          = {5111 - Domain-Specific Simulation $\&$ Data Life Cycle Labs
                      (SDLs) and Research Groups (POF4-511) / DFG project
                      G:(GEPRIS)196253076 - TRR 110: Symmetrien und
                      Strukturbildung in der Quantenchromodynamik (196253076)},
      pid          = {G:(DE-HGF)POF4-5111 / G:(GEPRIS)196253076},
      typ          = {PUB:(DE-HGF)8 / PUB:(DE-HGF)7},
      doi          = {10.22323/1.453.0007},
      url          = {https://juser.fz-juelich.de/record/1037677},
}