Zanotti, James, Can, K Utku, Horsley, Roger, Nakamura, Yoshifumi, Perlt, Holger, Rakow, Paul 
ORCID: 0000-0003-4486-2158, Schierholz, Gerrit, Stueben, Hinnerk and Young, Ross
(2022)
Advances in lattice hadron physics calculations using the gradient flow.
In: The 38th International Symposium on Lattice Field Theory, 2021-7-25 - ?.
Abstract
Lattice calculations of hadronic observables are aggravated by short-distance fluctuations. The gradient flow, which can be viewed as a particular realisation of the coarse-graining step of momentum space RG transformations, proves a powerful tool for evolving the lattice gauge field to successively longer length scales for any initial coupling. Already at small flow times we find the signal-to-noise ratio of two- and three-point functions significantly enhanced and the projection onto the ground state largely improved, while the effect on the hadronic observables considered here to be negligible. A further benefit is that far fewer conjugate gradient iterations are needed for the Wilson-Dirac inverter to converge. Additionally, we find the renormalisation constants of quark bilinears to be significantly closer to unity.
| Item Type: | Conference or Workshop Item (Unspecified) |
|---|---|
| Divisions: | Faculty of Science and Engineering > School of Physical Sciences |
| Depositing User: | Symplectic Admin |
| Date Deposited: | 13 Sep 2022 14:13 |
| Last Modified: | 15 Mar 2024 15:19 |
| DOI: | 10.22323/1.396.0055 |
| Open Access URL: | https://arxiv.org/pdf/2112.06355.pdf |
| Related URLs: | |
| URI: | https://livrepository.liverpool.ac.uk/id/eprint/3164557 |
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