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

By M. Peardon, J. Bulava, J. Foley, C. Morningstar, J. Dudek, R. Edwards, B. Joó, Huey-Wen Lin, D. Richards, K. Juge. 2009

252 citations recorded by the source corpus.

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.

Subfields: Nuclear and High Energy Physics

View Paper: https://www.semanticscholar.org/paper/612f4a547e78ec875d035095f9f8592f4edaf650

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In Nuclear and High Energy Physics

Citations in the corpus

Novel quark smearing for hadrons with high momenta in lattice QCD (2016, background): “[31] how to construct hadronic two-point functions from these perambulators as there is only one difference: In the contractions over l and m weight factors exp(−σ(2)ω(2) (k)l0/2) and exp(−σ (2)ω(2) (k)mt/2) should be introduced, where ω(2) (k)mt refers to the mth eigenvalue of the negative covarian”
Scattering processes and resonances from lattice QCD (2017, methodology): “By computing a large number of propagation objects in the distillation framework (Peardon et al., 2009), the Hadron Spectrum Collaboration were able to compute the required correlation functions and obtain finite-volume spectra at two pion masses, mπ ∼ 236, 391 MeV.”
Light Hadron Masses from Lattice QCD (2012, methodology): “A variant of this method is the Laplace-Heaviside (LapH) smearing (Peardon et al., 2009) where the smearing kernel is defined as a Heaviside step function on the lowest eigenmodes of the covariant Laplacian.”
Baryons as relativistic three-quark bound states (2016, background): “There are a number of technical tools (‘quark source smearing’ [261, 262], ‘distillation’ [263], AMIAS [264], etc.”
Excited and exotic charmonium spectroscopy from lattice QCD (2012, methodology): “[22], the outer product structure of allows a correlation function to be factorised.”