3 papers
hep-lat2025
Investigating a two-level algorithm for fermionic observables
Lorenzo Barca, Jacob Finkenrath, Stefan Schaefer
We investigate the combination of a two-level sampling algorithm with distillation techniques to compute disconnected fermionic correlation functions. The method relies on a factor…
hep-lat2025
Update on two-level sampling for glueball observables in quenched QCD
Lorenzo Barca, Jacob Finkenrath, Francesco Knechtli +3
We report our progress in combining a two-level sampling algorithm with distillation techniques for calculations of disconnected diagrams in quenched QCD. The simulations are perfo…
hep-lat2024
Exponential Error Reduction for Glueball Calculations Using a Two-Level Algorithm in Pure Gauge Theory
Lorenzo Barca, Francesco Knechtli, Sofie Martins +3
This study explores the application of a two-level algorithm to enhance the signal-to-noise ratio of glueball calculations in four-dimensional pure gauge theory. O…