Physics – High Energy Physics – High Energy Physics - Lattice
Scientific paper
2009-05-13
Phys.Rev.D80:054506,2009
Physics
High Energy Physics
High Energy Physics - Lattice
14 pages, 9 figures
Scientific paper
10.1103/PhysRevD.80.054506
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.
Bulava John
Dudek Jozef
Edwards Robert G.
Foley Justin
Joó Bálint
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