Variants of fattening and flavor symmetry restoration

Abstract

We study the effects of different "fat link" actions for Kogut-Susskind quarks on flavor symmetry breaking. Our method is mostly empirical - we compute the pion spectrum with different valence quark actions on common sets of sample lattices. Different actions are compared, as best we can, at equivalent physical points. We find significant reductions in flavor symmetry breaking relative to the conventional or to the "link plus staple" actions, with a reasonable cost in computer time. We also develop and test a scheme for approximate unitarization of the fat links. While our tests have concentrated on the valence quark action, our results will be useful in designing simulations with dynamical quarks.

16 pages, LaTeX, PostScript figures included

References in corpus (9)

• A New Way to Set the Energy Scale in Lattice Gauge Theories and its Application to the Static Force and ${\alpha }_s$ in SU(2) Yang--Mills Theory
• Flavor-Symmetry Restoration and Symanzik Improvement for Staggered Quarks
• Testing improved actions for dynamical Kogut-Susskind quarks
• A Study of Practical Implementations of the Overlap-Dirac Operator in Four Dimensions
• Improved staggered quark actions with reduced flavour symmetry violations for lattice QCD
• A quark action for very coarse lattices
• Tests of Hypercubic Fermion Actions
• Improving the staggered quark action to reduce flavour symmetry violations
• Instanton Effects in Hadron Spectroscopy in SU(2) (Lattice) Gauge Theory

Cited by in corpus (231)

• The equation of state in (2+1)-flavor QCD
• The chiral and deconfinement aspects of the QCD transition
• FLAG Review 2019
• Flavor Symmetry and the Static Potential with Hypercubic Blocking
• Analytic Smearing of SU(3) Link Variables in Lattice QCD
• Equation of state and QCD transition at finite temperature
• QCD and strongly coupled gauge theories: challenges and perspectives
• Full nonperturbative QCD simulations with 2+1 flavors of improved staggered quarks
• Nucleon Electromagnetic Form Factors
• The QCD spectrum with three quark flavors
• Review of lattice results concerning low energy particle physics
• High-Precision Lattice QCD Confronts Experiment
• Light pseudoscalar decay constants, quark masses, and low energy constants from three-flavor lattice QCD
• Nucleon Generalized Parton Distributions from Full Lattice QCD
• The equation of state in lattice QCD: with physical quark masses towards the continuum limit
• The Scalar Strange Content of the Nucleon from Lattice QCD
• QCD Thermodynamics with Three Flavors of Improved Staggered Quarks
• Lattice QCD calculation of form factors describing the rare decays $B\to K^{\ast }{\ell }^{+}{\ell }^{-}$ and $B_s\to \varphi {\ell }^{+}{\ell }^{-}$
• The Upsilon spectrum and m_b from full lattice QCD
• Unquenched quark propagator in Landau gauge
• 50 Years of Quantum Chromodynamics
• Interactions of Charmed Mesons with Light Pseudoscalar Mesons from Lattice QCD and Implications on the Nature of the D_{s0}^*(2317)
• Lattice QCD inputs to the CKM unitarity triangle analysis
• Neutral B Meson Mixing in Unquenched Lattice QCD
• Light hadron spectroscopy using domain wall valence quarks on an Asqtad sea
• The B Meson Decay Constant from Unquenched Lattice QCD
• $B_{(s)}^0$-mixing matrix elements from lattice QCD for the Standard Model and beyond
• Towards the glueball spectrum from unquenched lattice QCD
• Nuclear Physics from Lattice QCD
• B Meson Semileptonic Form Factors from Unquenched Lattice QCD
• Nucleon-Nucleon Scattering From Fully-Dynamical Lattice QCD
• $|V_{ub}|$ from $B\to \pi \ell \nu$ decays and (2+1)-flavor lattice QCD
• Light Hadron Masses from Lattice QCD
• Charmed meson decay constants in three-flavor lattice QCD
• The QCD equation of state from the lattice
• Free energy of a static quark anti-quark pair and the renormalized Polyakov loop in three flavor QCD
• The nucleon axial charge in full lattice QCD
• The Upsilon spectrum and the determination of the lattice spacing from lattice QCD including charm quarks in the sea
• Lattice QCD at non-zero temperature
• Update of $|V_{cb}|$ from the $\bar{B}\to D^{\ast }\ell \bar{\nu }$ form factor at zero recoil with three-flavor lattice QCD
• $B\to K{l}^{+}{l}^{-}$ decay form factors from three-flavor lattice QCD
• Hypercubic Smeared Links for Dynamical Fermions
• Hyperon-Nucleon Scattering from Fully-Dynamical Lattice QCD
• Multi-Pion States in Lattice QCD and the Charged-Pion Condensate
• The B -> pi l nu semileptonic form factor from three-flavor lattice QCD: A model-independent determination of |V(ub)|
• The static quark potential in three flavor QCD
• I=2 pi-pi Scattering from Fully-Dynamical Mixed-Action Lattice QCD
• Staggered eigenvalue mimicry
• Charmed-Baryon Spectroscopy from Lattice QCD with N_f=2+1+1 Flavors
• Singly and Doubly Charmed J=1/2 Baryon Spectrum from Lattice QCD
• Scaling behavior of quark propagator in full QCD
• First determination of the strange and light quark masses from full lattice QCD
• Precise Determination of the I=2 pipi Scattering Length from Mixed-Action Lattice QCD
• QCD Thermodynamics from the Lattice
• $D\to K,l\nu$ Semileptonic Decay Scalar Form Factor and $|V_{cs}|$ from Lattice QCD
• Lattice quark propagator with staggered quarks in Landau and Laplacian gauges
• Calculating the hadronic vacuum polarization and leading hadronic contribution to the muon anomalous magnetic moment with improved staggered quarks
• Scaling tests of the improved Kogut-Susskind quark action
• Strong-Isospin Violation in the Neutron-Proton Mass Difference from Fully-Dynamical Lattice QCD and PQQCD
• Rationale for UV-filtered clover fermions
• Scaling tests with dynamical overlap and rooted staggered fermions
• Chiral Logs in the Presence of Staggered Flavor Symmetry Breaking
• The B -> D* l nu form factor at zero recoil from three-flavor lattice QCD: A model independent determination of |V_cb|
• The Index Theorem and Universality Properties of the Low-lying Eigenvalues of Improved Staggered Quarks
• Bottomonium spectrum at order v^6 from domain-wall lattice QCD: precise results for hyperfine splittings
• The B_s and D_s decay constants in 3 flavor lattice QCD
• Precise B, B_s and B_c meson spectroscopy from full lattice QCD
• Lattice QCD with two dynamical flavors of domain wall quarks
• Improving the Chiral Properties of Lattice Fermions
• Hadronic physics with domain-wall valence and improved staggered sea quarks
• Pi-K Scattering in Full QCD with Domain-Wall Valence Quarks
• Heavy-light mesons with staggered light quarks
• Axial Nucleon and Nucleon to Delta form fractors and the Goldberger-Treiman Relations from Lattice QCD
• On chiral extrapolations of charmed meson masses and coupled-channel reaction dynamics
• SU(2) chiral perturbation theory low-energy constants from 2+1 flavor staggered lattice simulations
• Delta-baryon electromagnetic form factors in lattice QCD
• Modelling the quark propagator
• Staggered Chiral Perturbation Theory for Heavy-Light Mesons
• Lattice calculation of $1^{-+}$ hybrid mesons with improved Kogut-Susskind fermions
• Accelerating Staggered Fermion Dynamics with the Rational Hybrid Monte Carlo (RHMC) Algorithm
• First Calculation of Hyperon Axial Couplings from Lattice QCD
• Lattice QCD and the anomalous magnetic moment of the muon
• B_s->D_s/B->D Semileptonic Form-Factor Ratios and Their Application to BR(B^0_s->μ^+μ^-)
• The K+K+ Scattering Length from Lattice QCD
• Two Meson Systems with Ginsparg-Wilson Valence Quarks
• Center Vortices and the Dirac Spectrum
• Neutron electric polarizability from unquenched lattice QCD using the background field approach
• f_K/f_pi in Full QCD with Domain Wall Valence Quarks
• Meson-Baryon Scattering Lengths from Mixed-Action Lattice QCD
• Radiative corrections to the lattice gluon action for highly improved staggered quarks (HISQ) and the effect of such corrections on the static potential
• Deconfinement and chiral transition with the highly improved staggered quark (HISQ) action
• High Statistics Analysis using Anisotropic Clover Lattices: (IV) Volume Dependence of Light Hadron Masses
• Role of center vortices in chiral symmetry breaking in SU(3) gauge theory
• Lattice QCD study of the s-wave $\pi \pi$ scattering lengths in the I=0 and 2 channels
• The Low-Lying Dirac Spectrum of Staggered Quarks
• The axial N to Delta transition form factors from Lattice QCD
• Unqueched Kogut-Susskind quark propagator in Lattice Landau Gauge QCD
• $B_s\to K\ell \nu$ decay from lattice QCD
• Effective field theories for QCD with rooted staggered fermions
• Tuning Fermilab Heavy Quarks in 2+1 Flavor Lattice QCD with Application to Hyperfine Splittings
• Hadronic Interactions from Lattice QCD
• Construction of $bb\bar{u}\bar{d}$ tetraquark states on lattice with NRQCD bottom and HISQ up/down quarks
• A study of the eta and eta' mesons with improved staggered fermions
• Lattice study on $\pi K$ scattering with moving wall source
• $B_s^0-\overline{B_s^0}$ Mixing Parameters from Unquenched Lattice QCD
• Study of the finite temperature transition in 3-flavor QCD using the R and RHMC algorithms
• On the fourth root prescription for dynamical staggered fermions
• Prediction of the Omega_bbb mass from lattice QCD
• Universality of Mixed Action Extrapolation Formulae
• A Lattice Test of 1/N_c Baryon Mass Relations
• On the convergence of the chiral expansion for the baryon ground-state masses
• Single flavor staggered fermions
• Lattice QCD at finite temperature : present status
• Infrared and ultraviolet properties of the Landau gauge quark propagator
• Strange Baryon Electromagnetic Form Factors and SU(3) Flavor Symmetry Breaking
• Mixed Meson Masses with Domain-Wall Valence and Staggered Sea Fermions
• One-loop matching coefficients for improved staggered bilinears
• The electromagnetic form factors of the Omega in lattice QCD
• Unquenched determination of the kaon parameter B_K from improved staggered fermions
• Filtered overlap: speedup, locality, kernel non-normality and Z_A~1
• Staggered fermions, zero modes, and flavor-singlet mesons
• Topological susceptibility with the improved Asqtad action
• One-Loop Matching of the Heavy-Light A_0 and V_0 Currents with NRQCD Heavy and Improved Naive Light Quarks
• One loop matching coefficients for a variant overlap action--and some of its simpler relatives
• Singlet vs Nonsinglet Perturbative Renormalization of Fermion Bilinears
• Localized eigenmodes of covariant Laplacians in the Yang-Mills vacuum
• SU(2) Low-Energy Constants from Mixed-Action Lattice QCD
• Short-distance matrix elements for $D^0$-meson mixing for $N_f=2+1$ lattice QCD
• Automated generation of lattice QCD Feynman rules
• QCD with one compact spatial dimension
• Running mass, effective energy and confinement: the lattice quark propagator in Coulomb gauge
• Evidence for non-analytic light quark mass dependence in the baryon spectrum
• Mixed Action Effective Field Theory: an Addendum
• SU(3) Polyakov linear-sigma model: Conductivity and viscous properties of QCD matter in thermal medium
• Systematics of Staggered Fermion Spectral Properties and Topology
• Multiple molecular dynamics time-scales in Hybrid Monte Carlo fermion simulations
• Multigrid for Staggered Lattice Fermions
• The chirally improved quark propagator and restoration of chiral symmetry
• Dynamical Fermions with Fat Links
• Perturbative improvement of staggered fermions using fat links
• Neutral $B$ mixing from 2+1 flavor lattice-QCD: the Standard Model and beyond
• The Gell-Mann -- Okubo mass relation among baryons from fully-dynamical mixed-action lattice QCD
• Möbius domain-wall fermions on gradient-flowed dynamical HISQ ensembles
• Moving NRQCD for heavy-to-light form factors on the lattice
• Unquenching effects on the coefficients of the Lüscher-Weisz action
• Lattice QCD at the end of 2003
• Methods for Pseudoscalar Flavour-Singlet Mesons with Staggered Fermions
• Evaluating the Fermionic Determinant of Dynamical Configurations
• $I=0$ $\pi \pi$ $s$-wave scattering length from lattice QCD
• Magnetic Catalysis in Graphene Effective Field Theory
• Strong coupling constant and quark masses from lattice QCD
• Simulation of dynamical fermions with smeared links
• Non-perturbative Renormalization for Improved Staggered Bilinears
• Taste symmetry breaking with HYP-smeared staggered fermions
• Partial-Global Stochastic Metropolis Update for Dynamical Smeared Link Fermions
• Gauge action improvement and smearing
• Lattice Field Theory Study of Magnetic Catalysis in Graphene
• Heavy baryon spectrum on lattice with NRQCD bottom and HISQ lighter quarks
• Dynamical fermions as a global correction
• Improved flavor symmetry in Kogut-Susskind fermion actions
• High temperature QCD with three flavors of improved staggered quarks
• pi-pi Scattering in Twisted Mass Chiral Perturbation Theory
• Semileptonic B Decays from an NRQCD/D234 Action
• Domain decomposition improvement of quark propagator estimation
• Coupled-channel dynamics with chiral long-range forces in the open-charm sector of QCD
• Results on improved KS dynamical configurations: spectrum, decay constants, etc
• New results on cut-off effects in spectroscopy with the fixed point action
• The locality of the square-root method for improved staggered quarks
• Chiral extrapolation of lattice data for B-meson decay constant
• Lattice Quark Propagator in Landau and Laplacian Gauges
• Mixed Action Simulations on Staggered Background; Interpretation and Result for the 2-flavor QCD Chiral Condensate
• Four Fermion Interactions in Non-Abelian Gauge Theory
• Hadronic Screening in Improved Taste
• An alternate smearing method for Wilson loops in lattice QCD
• More about QCD on compact spaces
• Preliminary lattice study of the I=1 $K\bar{K}$ scattering length
• Static hybrid quarkonium potential with improved staggered quarks
• Heavy-light decay constants with three dynamical flavors
• Topology and Staggered Fermion Action Improvement
• Highly Improved Naive and Staggered Fermions
• Bottom-Hadron Mass Splittings from Static-Quark Action on 2+1-Flavor Lattices
• One-loop matching factors for staggered bilinear operators with improved gauge actions
• Topological susceptibility with the improved Asqtad action
• Exotic hybrid mesons from improved Kogut-Susskind fermions
• Comparison Studies of Finite Momentum Correlators on Anisotropic and Isotropic Lattices
• One-loop matching of Delta S=2 four-quark operators with improved staggered fermions
• Lattice QCD Green's functions in maximally Abelian gauge: infrared Abelian dominance and the quark sector
• The Phase Diagram of High Temperature QCD with Three Flavors of Improved Staggered Quarks
• Matching coefficients for improved staggered bilinears
• QCD at non-zero temperature: bulk properties and heavy quarks
• Light hadron properties with improved staggered quarks
• Taste symmetry breaking at finite temperature
• Gauge covariant neural network for quarks and gluons
• A note on Rome-Southampton Renormalization with Smeared Gauge Fields
• Physics prospects of UV-filtered overlap quarks
• Numerical study of hot strongly interacting matter
• Flavor symmetry breaking and scaling for improved staggered actions in quenched QCD
• Thermodynamics with 3 and 2+1 Flavors of Improved Staggered Quarks
• Dynamical overlap fermions: techniques and results
• Electromagnetic Corrections in Staggered Chiral Perturbation Theory
• Excited States in Staggered Meson Propagators
• Index Theorem and Random Matrix Theory for Improved Staggered Quarks
• B_K from improved staggered quarks
• Chiral transition and deconfinement transition in QCD with the highly improved staggered quark (HISQ) action
• Light hadrons in 2+1 flavor lattice QCD
• Spin-taste representation of minimally doubled fermions from first principles: Karsten-Wilczek fermions
• High Energy Physics from High Performance Computing
• Recent progress in calculating weak matrix elements using staggered fermions
• Locations of Roberge-Weiss transition endpoints in lattice QCD with $N_f=2$ improved KS quarks
• Improving the Kinetic Couplings in Lattice Non-Relativistic QCD
• Stout smearing and Wilson flow in lattice perturbation theory
• Benchmarking and tuning the MILC code on clusters and supercomputers
• Optimizing Staggered Multigrid for Exascale performance
• Heavy-light decay constants using clover valence quarks and three flavors of dynamical improved staggered quarks
• Chiral symmetry and taste symmetry from the eigenvalue spectrum of staggered Dirac operators
• Heavy-quark meson spectrum tests of the Oktay-Kronfeld action
• Hadron Structure from Lattice QCD
• Topics in Lattice QCD and Effective Field Theory
• QCD Dirac spectrum and components of the gauge field
• Least-Squared Optimized Polynomials for Smeared Link Actions
• Neutral B mixing from 2+1 flavor lattice QCD
• Progress report on the staggered epsilon'/epsilon project
• Nonperturbative tuning of $O(a^2)$ improved staggered fermions
• Towards measuring the eta' mass with N_f=2+1 staggered fermions
• Lattice results with three quark flavours
• Cost of dynamical quark simulations with improved staggered quarks
• Calculating weak matrix elements using HYP staggered fermions
• Dynamical fermions in lattice quantum chromodynamics
• Three Flavor QCD at High Temperatures
• Kaon Condensation with Lattice QCD
• Penguin diagrams for improved staggered fermions