Novel quark-field creation operator construction for hadronic physics in lattice QCD

Michael Peardon, John Bulava, Justin Foley, Colin Morningstar, Jozef Dudek, Robert G. Edwards, Bálint Joó, Huey Wen Lin, David G. Richards, Keisuke Jimmy Juge

Research output: Contribution to journalArticlepeer-review

340 Scopus citations

Abstract

A new quark-field smearing algorithm is defined which enables efficient calculations of a broad range of hadron correlation functions. The technique applies a low-rank operator to define smooth fields that are to be used in hadron creation operators. The resulting space of smooth fields is small enough that all elements of the reduced quark propagator can be computed exactly at reasonable computational cost. Correlations between arbitrary sources, including multihadron operators can be computed a posteriori without requiring new lattice Dirac operator inversions. The method is tested on realistic lattice sizes with light dynamical quarks.

Original languageEnglish
Article number054506
JournalPhysical Review D - Particles, Fields, Gravitation and Cosmology
Volume80
Issue number5
DOIs
StatePublished - Sep 22 2009
Externally publishedYes

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