The improvement of hadronic matrix elements in lattice QCD

Autor:	G. Heatlie, C. Pittori, Giancarlo Rossi, C.T. Sachrajda, G. Martinelli
Rok vydání:	1991
Předmět:	Physics Nuclear and High Energy Physics Matrix (mathematics) Particle physics Lattice constant Correlation function High Energy Physics::Lattice Hadron Order (group theory) Lattice QCD Fermion Action (physics)
Zdroj:	Nuclear Physics B. 352:266-288
ISSN:	0550-3213
DOI:	10.1016/0550-3213(91)90137-m
Popis:	We present a practical method to eliminate all terms of order a ( a being the lattice spacing) in the calculations of hadronic matrix elements with Wilson fermions. The method is based on an “improved” Wilson action combined with a suitable modification of the fermion operators. With this technique one expects to reduce significantly the systematic errors which arise due to the finiteness of the lattice spacing. We estimate that these errors will be reduced from about 20–30% (as found in recent numerical simulations) to just a few percent.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::db30a192ffcb9bdb08ca05eebc04826e https://doi.org/10.1016/0550-3213(91)90137-m Zobrazit plný text záznamu