On the reduction of hypercubic lattice artifacts
F. de Soto, C. Roiesnel
TL;DR
This paper compares different methods to reduce discretization errors in lattice quantum field theories, demonstrating that systematic extrapolation can eliminate artifacts breaking O(4) symmetry.
Contribution
It introduces a systematic extrapolation approach to remove hypercubic lattice artifacts, improving continuum limit accuracy.
Findings
Extrapolation effectively reduces hypercubic artifacts.
Systematic methods can restore O(4) symmetry.
Comparison of artifact reduction techniques.
Abstract
This note presents a comparative study of various options to reduce the errors coming from the discretization of a Quantum Field Theory in a lattice with hypercubic symmetry. We show that it is possible to perform an extrapolation towards the continuum which is able to eliminate systematically the artifacts which break the O(4) symmetry.
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