TY  - CONF
AU  - Gäntgen, Christoph
AU  - Berkowitz, Evan
AU  - Luu, Tom
AU  - Ostmeyer, Johann
AU  - Rodekamp, Marcel
TI  - Reducing the Sign Problem with simple Contour Deformation
CY  - Trieste, Italy
PB  - Sissa Medialab Trieste
M1  - FZJ-2025-00840
T2  - Proceedings of The 40th International Symposium on Lattice Field Theory — PoS(LATTICE2023)
SP  - 9p.
PY  - 2024
AB  - 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.
T2  - The 40th International Symposium on Lattice Field Theory
CY  - 31 Jul 2023 - 4 Aug 2024, Fermi National Accelerator Laboratory (USA)
Y2  - 31 Jul 2023 - 4 Aug 2024
M2  - Fermi National Accelerator Laboratory, USA
LB  - PUB:(DE-HGF)8 ; PUB:(DE-HGF)7
DO  - DOI:10.22323/1.453.0007
UR  - https://juser.fz-juelich.de/record/1037677
ER  -