Over-Improved Stout-Link Smearing

Abstract

A new over-improved stout-link smearing algorithm, designed to stabilise instanton-like objects, is presented. A method for quantifying the selection of the over-improvement parameter, $\epsilon$, is demonstrated. The new smearing algorithm is compared with the original stout-link smearing, and Symanzik improved smearing through calculations of the topological charge and visualisations of the topological charge density.

9 pages, 18 figures, submitted to Physical Review D

References in corpus (13)

• Flavor Symmetry and the Static Potential with Hypercubic Blocking
• Analytic Smearing of SU(3) Link Variables in Lattice QCD
• The QCD spectrum with three quark flavors
• Light hadrons with improved staggered quarks: approaching the continuum limit
• Highly-improved lattice field-strength tensor
• Instantons from over-improved cooling
• Vacuum structure revealed by over-improved stout-link smearing compared with the overlap analysis for quenched QCD
• Improved Smoothing Algorithms for Lattice Gauge Theory
• General Algorithm For Improved Lattice Actions on Parallel Computing Architectures
• Improved cooling algorithm for gauge theories
• Low-lying eigenmodes of the Wilson-Dirac operator and correlations with topological objects
• Topological Charge Evolution in the Markov-Chain of QCD
• Comparison of |Q|=1 and |Q|=2 gauge-field configurations on the lattice four-torus

Cited by in corpus (34)

• Theta dependence of SU(N) gauge theories in the presence of a topological term
• 50 Years of Quantum Chromodynamics
• Deconfinement transition in two-flavour lattice QCD with dynamical overlap fermions in an external magnetic field
• Scaling study of dynamical smeared-link clover fermions
• Topological charge using cooling and the gradient flow
• Topology and axions in QCD
• $F_K/F_{\pi }$ from Möbius domain-wall fermions solved on gradient-flowed HISQ ensembles
• Visualisation of Centre Vortex Structure
• Connection between centre vortices and instantons through gauge-field smoothing
• String effects and the distribution of the glue in mesons at finite temperature
• Brillouin improvement for Wilson fermions
• Gluon propagator on a centre-vortex background
• Topology of dynamical lattice configurations including results from dynamical overlap fermions
• Preconditioning Maximal Center Gauge with Stout Link Smearing in SU(3)
• The static quark potential from the gauge invariant Abelian decomposition
• Impact of Dynamical Fermions on QCD Vacuum Structure
• The Y-stringlike behavior of a static hadron at finite T
• Bosonic stringlike behavior and the Ultraviolet filtering of QCD
• Wilson mass dependence of the overlap topological charge density
• Gluonic profile of the static baryon at finite temperature
• Quark Propagation in the Instantons of Lattice QCD
• The Static Quark Potential from the Gauge Independent Abelian Decomposition
• Topological susceptibility near $T_c$ in SU(3) gauge theory
• Twist-3 Contributions in Semi-Inclusive DIS with Transversely Polarized Target
• Instanton contributions to the low-lying hadron mass spectrum
• Numerical evidence for fractional topological objects in SU(3) gauge theory
• Smoothing algorithms for projected center-vortex gauge fields
• A lattice Dirac operator for QCD with light dynamical quarks
• Modifying the molecular dynamics action to increase topological tunnelling rate for dynamical overlap fermions
• Localization of topological charge density near $T_c$ in quenched QCD with Wilson flow
• Topological Structure of the QCD Vacuum Revealed by Overlap Fermions
• String tension from gauge invariant Magnetic Monopoles
• Deconfinement transition in two-flavour lattice QCD with dynamical overlap fermions
• Role of the Wilson mass parameter in the overlap Dirac topological charge density