Error reduction technique using covariant approximation and application to nucleon form factor
High Energy Physics - Lattice
2012-12-24 v1 Nuclear Theory
Abstract
We demonstrate the new class of variance reduction techniques for hadron propagator and nucleon isovector form factor in the realistic lattice of domain-wall fermion. All-mode averaging (AMA) is one of the powerful tools to reduce the statistical noise effectively for wider varieties of observables compared to existing techniques such as low-mode averaging (LMA). We adopt this technique to hadron two-point functions and three-point functions, and compare with LMA and traditional source-shift method in the same ensembles. We observe AMA is much more cost effective in reducing statistical error for these observables.
Cite
@article{arxiv.1212.5542,
title = {Error reduction technique using covariant approximation and application to nucleon form factor},
author = {Thomas Blum and Taku Izubuchi and Eigo Shintani},
journal= {arXiv preprint arXiv:1212.5542},
year = {2012}
}
Comments
Proceedings of the 30th International Symposium on Lattice Field Theory, June 24-29, 2012, Cairns, Australia