187 citations · 1.1k across the 30 of their papers we have counts for
13 papers · 1 filter
On the definition of the covariant lattice Dirac operator
Claude Roiesnel
In the continuum the definitions of the covariant Dirac operator and of the gauge covariant derivative operator are tightly intertwined. We point out that the naive discretization…
On the reduction of hypercubic lattice artifacts
F. de Soto, C. Roiesnel
This note presents a comparative study of various options to reduce the errors coming from the discretization of a Quantum Field Theory in a lattice with hypercubic symmetry. We sh…
Two body scattering length of Yukawa model on a lattice
F. De Soto, J. Carbonell, C. Roiesnel +3
The extraction of scattering parameters from Euclidean simulations of a Yukawa model in a finite volume with periodic boundary conditions is analyzed both in non relativistic quant…
Yukawa model on a lattice: two body states
F. De Soto, J. Carbonell, C. Roiesnel +3
We present first results of the solutions of the Yukawa model as a Quantum Field Theory (QFT) solved non perturbatively with the help of lattice calculations. In particular we will…
Short comment about the lattice gluon propagator at vanishing momentum
Ph. Boucaud, Th. Brüntjen, J. P. Leroy +6
We argue that all evidences point towards a finite non-vanishing zero momentum renormalised lattice gluon propagator in the infinite volume limit. We argue that different simulatio…
Non-Perturbative Approach to the Landau Gauge Gluodynamics
A. Y. Lokhov, Ph. Boucaud, J. P. Leroy +5
We discuss a non-perturbative lattice calculation of the ghost and gluon propagators in the pure Yang-Mills theory in Landau gauge. The ultraviolet behaviour is checked up to NNNLO…
Nuclear models on a lattice
F. De Soto, J. Carbonell, C. Roiesnel +3
We present the first results of a quantum field approach to nuclear models obtained by lattice techniques. Renormalization effects for fermion mass and coupling constant in case of…
Scaling Properties of the Probability Distribution of Lattice Gribov Copies
A. Y. Lokhov, O. Pène, C. Roiesnel
We study the problem of the Landau gauge fixing in the case of the SU(2) lattice gauge theory. We show that the probability to find a lattice Gribov copy increases considerably whe…
Non-perturbative Power Corrections to Ghost and Gluon Propagators
Ph. Boucaud, J. P. Leroy, A. Le Yaouanc +5
We study the dominant non-perturbative power corrections to the ghost and gluon propagators in Landau gauge pure Yang-Mills theory using OPE and lattice simulations. The leading or…
Gluon propagator, triple gluon vertex and the QCD coupling constant
D. Becirevic, Ph. Boucaud, J. P. Leroy +4
We study the UV-scaling of the flavorless gluon propagator in the Landau gauge in an energy window up to 9 GeV. Dominant hypercubic lattice artifacts are eliminated. A large set of…
High-statistics finite size scaling analysis of U(1) lattice gauge theory with Wilson action
Burkhard Klaus, Claude Roiesnel
We describe the results of a systematic high-statistics Monte-Carlo study of finite-size effects at the phase transition of compact U(1) lattice gauge theory with Wilson action on…
Finite size effects at phase transition in compact U(1) gauge theory
Claude Roiesnel
We present and discuss the results of a Monte-Carlo simulation of the phase transition in pure compact U(1) lattice gauge theory with Wilson action on a hypercubic lattice with per…
On the U(2) Lattice Gauge Theory
Claude Roiesnel
We study the U(2) lattice gauge theory in the pure gauge sector using the simplest action, with determinant and fundamental terms, having the naive continuum limit of SU(2)…