%0 Conference Paper
%A Gäntgen, Christoph
%A Berkowitz, Evan
%A Luu, Tom
%A Ostmeyer, Johann
%A Rodekamp, Marcel
%T Reducing the Sign Problem with simple Contour Deformation
%C Trieste, Italy
%I Sissa Medialab Trieste
%M FZJ-2025-00840
%B Proceedings of The 40th International Symposium on Lattice Field Theory — PoS(LATTICE2023)
%P 9p.
%D 2024
%X 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.
%B The 40th International Symposium on Lattice Field Theory
%C 31 Jul 2023 - 4 Aug 2024, Fermi National Accelerator Laboratory (USA)
Y2 31 Jul 2023 - 4 Aug 2024
M2 Fermi National Accelerator Laboratory, USA
%F PUB:(DE-HGF)8 ; PUB:(DE-HGF)7
%9 Contribution to a conference proceedingsContribution to a book
%R 10.22323/1.453.0007
%U https://juser.fz-juelich.de/record/1037677