Improvement via hypercubic smearing in triplet and sextet QCD

Abstract

We study non-perturbative improvement in SU(3) lattice gauge theory coupled to fermions in the fundamental and two-index symmetric representations. Our lattice action is defined with hypercubic smeared links incorporated into the Wilson-clover fermion kernel. Using standard Schroedinger-functional techniques we estimate the clover coefficient Csw and find that discretization errors are much smaller than in thin-link theories.

4 pages, 2 figures; v3: The analysis has been extensively revised. Conclusions are the same. Final version

References in corpus (14)

• Flavor Symmetry and the Static Potential with Hypercubic Blocking
• Chiral symmetry and O(a) improvement in lattice QCD
• Non-perturbative O(a) improvement of lattice QCD
• O(a) improvement of lattice QCD with two flavors of Wilson quarks
• Zero of the discrete beta function in SU(3) lattice gauge theory with color sextet fermions
• Hypercubic Smeared Links for Dynamical Fermions
• Phase structure of SU(3) gauge theory with two flavors of symmetric-representation fermions
• Infrared fixed point in SU(2) gauge theory with adjoint fermions
• Rationale for UV-filtered clover fermions
• Running coupling and mass anomalous dimension of SU(3) gauge theory with two flavors of symmetric-representation fermions
• Non-perturbative improvement of stout-smeared three flavour clover fermions
• Scaling study of dynamical smeared-link clover fermions
• Nonperturbative improvement of SU(2) lattice gauge theory with adjoint or fundamental flavors
• Scaling study for 2 HEX smeared fermions: hadron and quark masses

Cited by in corpus (25)

• Infrared fixed point in SU(2) gauge theory with adjoint fermions
• Spectroscopy of SU(4) composite Higgs theory with two distinct fermion representations
• Spectroscopy of SU(4) gauge theory with two flavors of sextet fermions
• Conformal Behavior at Four Loops and Scheme (In)Dependence
• Finite-temperature phase structure of SU(4) gauge theory with multiple fermion representations
• Radiative contribution to the composite-Higgs potential in a two-representation lattice model
• Mass anomalous dimension in sextet QCD
• Near the sill of the conformal window: gauge theories with fermions in two-index representations
• Chiral phase transition at finite temperature and conformal dynamics in large Nf QCD
• Running coupling in SU(2) gauge theory with two adjoint fermions
• Brillouin improvement for Wilson fermions
• Lattice study of large $N_c$ QCD
• Nonperturbative improvement of SU(2) lattice gauge theory with adjoint or fundamental flavors
• Non-perturbative beta function in three-dimensional electrodynamics
• Radiative contribution to the effective potential in composite Higgs models from lattice gauge theory
• New Ways to Determine Low-Energy Constants with Wilson Fermions
• Gradient Flow Coupling in the SU(2) gauge theory with two adjoint fermions
• Lattice Monte-Carlo study of pre-conformal dynamics in strongly flavoured QCD in the light of the chiral phase transition at finite temperature
• One,Two,Zero: Scales of Strong Interactions
• Infrared fixed point and anomalous dimensions in a composite Higgs model
• Suppressing dislocations in normalized hypercubic smearing
• Supersymmetric Extension of Technicolor & Fermion Mass Generation
• Slope of the beta function at the fixed point of SU(2) gauge theory with six or eight flavors
• Large $N_c$ Thermodynamics with Dynamical Fermions
• Non-perturbative O(a) improvement of the SU(3) sextet model