A novel quark-field creation operator construction for hadronic physics in lattice QCD
arXiv:0905.2160 · doi:10.1103/PhysRevD.80.054506
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 multi hadron 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.
14 pages, 9 figures
References in corpus (5)
- First results from 2+1 dynamical quark flavors on an anisotropic lattice: light-hadron spectroscopy and setting the strange-quark mass
- Charmonium excited state spectrum in lattice QCD
- Tuning for Three-flavors of Anisotropic Clover Fermions with Stout-link Smearing
- Lattice QCD determination of patterns of excited baryon states
- Excited State Nucleon Spectrum with Two Flavors of Dynamical Fermions