2 papers
hep-lat2024
Multigrid low-mode averaging
Roman Gruber, Tim Harris, Marina Krstic Marinkovic
We develop a generalization of low-mode averaging in which the number of low quark modes of the Dirac operator required for a constant variance reduction can be kept independent of…
hep-lat2024
Variance reduction via deflation with local coherence
Roman Gruber, Tim Harris, Marina Krstić Marinković
In large enough volumes, translation-averaging for quark-line connected diagrams reduces the variance inversely proportional to the volume. Stochastic estimators which implement tr…