Abstract

This note presents a method to reduce the discretization errors appearing when solving a Quantum Field Theory in a hypercubic lattice in both position and momentum-space. The method exploits the artifacts that break rotational symmetry to recover rotationally invariant results for two-point Green functions. We show that a combination of the results obtained in position and momentum space can be useful to signal the presence of rotationally invariant artifacts making use of their approximate Fourier transforms in the continuum. The method will be introduced using a Klein-Gordon propagator, and a direct application to gluon propagator in quenched lattice QCD will be given.

Details

Title
Restoring rotational invariance for lattice QCD propagators
Author
de Soto, F. 1 

 Universidad Pablo de Olavide, Departamento de Sistemas Físicos, Químicos y Naturales, Sevilla, Spain (GRID:grid.15449.3d) (ISNI:0000 0001 2200 2355) 
Pages
69
Publication year
2022
Publication date
Oct 2022
Publisher
Springer Nature B.V.
e-ISSN
10298479
Source type
Scholarly Journal
Language of publication
English
ProQuest document ID
2768581657
Copyright
© The Author(s) 2022. This work is published under http://creativecommons.org/licenses/by/4.0/ (the “License”). Notwithstanding the ProQuest Terms and Conditions, you may use this content in accordance with the terms of the License.