Analytic smearing of SU(3) link variables in lattice QCD

By C. Morningstar, M. Peardon. 2003

512 citations recorded by the source corpus.

An analytic method of smearing link variables in lattice QCD is proposed and tested. The differentiability of the smearing scheme with respect to the link variables permits the use of modern Monte Carlo updating methods based on molecular dynamics evolution for gauge-field actions constructed using such smeared links. In examining the smeared mean plaquette and the static quark-antiquark potential, no degradation in effectiveness is observed as compared to link smearing methods currently in use, although an increased sensitivity to the smearing parameter is found.

Subfields: Condensed Matter Physics, Nuclear and High Energy Physics

View Paper: https://www.semanticscholar.org/paper/19b423e2ff087b9740403c2b6b3e71ac342727cc

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Citations in the corpus

The QCD transition temperature: Results with physical masses in the continuum limit (2006, methodology): “le In this letter we use a tree-level Symanzik improved gauge, and a stout-improved staggered fermionic action (for the detailed form of our action see eqs. (2.1-2.3) of Ref. [9]). The stout-smearing [13] reduces the taste violation, a lattice artefact of the staggered type of fermions. In a previou”
Properties and uses of the Wilson flow in lattice QCD (2010, background): “The flow therefore tends to have a smoothing effect on the field and it is, in fact, generated by infinitesimal “stout link smearing” steps [3].”
High-precision scale setting in lattice QCD (2012, methodology): “We consider the 2-step stout-smeared staggered fermion action [33] used in our thermodynamics studies [17–21, 34].”
Microscopic clustering in light nuclei (2017, methodology): “This method is very common in lattice QCD to enhance the strength of a given quark source; see, e.g., Güsken (1990), Daniel et al. (1992), Allton et al. (1993), Morningstar and Peardon (2004), Hasenfratz, Hoffmann, and Schaefer (2007), and Edwards, Joo, and Lin (2008) for some ground-breaking work.”
The equation of state in lattice QCD: with physical quark masses towards the continuum limit (2005, background): “D/(U stout) is the four-flavor staggered Dirac matrix with stoutlink improvement [10].”
Review of lattice results concerning low-energy particle physics (2016, methodology): “Another example is the use of n-HYP smeared [477, 732], stout smeared [733, 734] or HEX (hypercubic stout) smeared [735] gauge links in the tree-level clover improved discretization of the quark action, denoted by “n-HYP tlSW”, “stout tlSW” and “HEX tlSW” in the following.”
Leading hadronic contribution to the muon magnetic moment from lattice QCD (2020, methodology): “ut using the 4stout lattice action. This discretization is dened through the use of the tree-level Symanzik gauge action [2] and a one-link staggered fermion action with four steps of stout smearing [3]. The smearing parameter was set to ˆ= 0:125. We have chosen six gauge coupling parameters, = 6=g2”
Nonperturbative QCD Simulations with 2+1 Flavors of Improved Staggered Quarks (2009, background): “…improvements (Sheikholeslami and Wohlert, 1985) or with the twisted mass (Frezzottie al., 2000, 2001; Frezzotti and Rossi, 2004) or other variants (Morningstar and Peardon, 2004; Zanottiet al., 2002), with the Kogut-Susskind or staggered fermion formulation (Bankset al., 1976, 1977; Kogut and…”
Properties and uses of the Wilson flow in lattice QCD (2010, background): “The flow therefore tends to have a smoothing effect on the field and it is, in fact, generated by infinitesimal “stout link smearing” steps [3].”
Electrical conductivity and charge diffusion in thermal QCD from the lattice (2014, background): “improved Wilson-clover fermion action with stout-smeared links [36].”