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A variance reduction technique for hadronic correlators with partially twisted boundary conditions

A variance reduction technique for hadronic correlators with partially twisted boundary conditions
A variance reduction technique for hadronic correlators with partially twisted boundary conditions
Partially twisted boundary conditions are widely used for improving the momentum resolution in lattice computations of hadronic correlation functions. The method is however expensive since every additional twist requires computing additional propagators. We propose a novel variance reduction technique that exploits statistical correlations to reduce the overall cost for computing correlators with additional twist angles. We explain and demonstrate the method for meson 2pt and 3pt functions.
hep-lat
Asmussen, Nils
df3fda64-c17d-4685-9399-a779e736de3b
Barone, Alessandro
6101b472-6a3f-4f75-81c5-1987eeb455db
Jüttner, Andreas
a90ff7c5-ae8f-4c8e-9679-b5a95b2a6247
Asmussen, Nils
df3fda64-c17d-4685-9399-a779e736de3b
Barone, Alessandro
6101b472-6a3f-4f75-81c5-1987eeb455db
Jüttner, Andreas
a90ff7c5-ae8f-4c8e-9679-b5a95b2a6247

[Unknown type: UNSPECIFIED]

Record type: UNSPECIFIED

Abstract

Partially twisted boundary conditions are widely used for improving the momentum resolution in lattice computations of hadronic correlation functions. The method is however expensive since every additional twist requires computing additional propagators. We propose a novel variance reduction technique that exploits statistical correlations to reduce the overall cost for computing correlators with additional twist angles. We explain and demonstrate the method for meson 2pt and 3pt functions.

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2112.09089v1 - Author's Original
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Published date: 16 December 2021
Keywords: hep-lat
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Identifiers

Local EPrints ID: 469138
URI: http://eprints.soton.ac.uk/id/eprint/469138
DOI: doi:10.48550/arXiv.2112.09089
PURE UUID: 8e137395-875b-47d8-b22b-314ff2d923b8
ORCID for Alessandro Barone: ORCID iD orcid.org/0000-0002-0036-2517
ORCID for Andreas Jüttner: ORCID iD orcid.org/0000-0002-3978-0927

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Date deposited: 07 Sep 2022 17:37
Last modified: 17 Mar 2024 03:57

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Contributors

Author: Nils Asmussen
Author: Alessandro Barone ORCID iD
Author: Andreas Jüttner ORCID iD

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