New extended interpolating fields built from three-dimensional fermions

Abstract

New extended interpolating operators made of quenched three dimensional fermions are introduced in the context of lattice QCD. The mass of the 3D fermions can be tuned in a controlled way to find a better overlap of the extended operators with the states of interest. The extended operators have good renormalization properties and are easy to control when taking the continuum limit. Moreover the short distance behaviour of the two point functions built from these operators is greatly improved. A numerical comparison with point sources and Jacobi smeared sources on dynamical 2+1 flavour configurations is presented.

References in corpus (8)

• On the generalized eigenvalue method for energies and matrix elements in lattice field theory
• Simulation of QCD with N_f=2+1 flavors of non-perturbatively improved Wilson fermions
• Lattice QCD with open boundary conditions and twisted-mass reweighting
• Lattice QCD without topology barriers
• Setting the scale for the CLS $2+1$ flavor ensembles
• Gauge-Invariant Smearing and Matrix Correlators using Wilson Fermions at beta=6.2
• Clebsch-Gordan Construction of Lattice Interpolating Fields for Excited Baryons
• Group-theoretical construction of extended baryon operators in lattice QCD

Cited by in corpus (3)

• Approaching the master-field: Hadronic observables in large volumes
• Meson-Nucleon Scattering Amplitudes from Lattice QCD
• Exploiting stochastic locality in lattice QCD: hadronic observables and their uncertainties