Exploiting stochastic locality in lattice QCD: hadronic observables and their uncertainties

Mattia Bruno, Marco Cè, Anthony Francis*, Patrick Fritzsch, Jeremy R. Green, Maxwell T. Hansen, Antonio Rago

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

Abstract / Description of output

Because of the mass gap, lattice QCD simulations exhibit stochastic locality: distant regions of the lattice fluctuate independently. There is a long history of exploiting this to increase statistics by obtaining multiple spatially-separated samples from each gauge field; in the extreme case, we arrive at the master-field approach in which a single gauge field is used. Here we develop techniques for studying hadronic observables using position-space correlators, which are more localized, and compare with the standard time-momentum representation. We also adapt methods for estimating the variance of an observable from autocorrelated Monte Carlo samples to the case of correlated spatially-separated samples.

Original languageEnglish
Article number167
Pages (from-to)1-43
Number of pages43
Journal Journal of High Energy Physics
Volume2023
Issue number11
DOIs
Publication statusPublished - 23 Nov 2023

Keywords / Materials (for Non-textual outputs)

  • Algorithms and Theoretical Developments
  • Correlation Functions
  • Hadronic Spectroscopy
  • Lattice QCD
  • Structure and Interactions

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