185 citations · 1k across the 26 of their papers we have counts for
14 papers · 1 filter
On the color structure of Yang-Mills theory with static sources in a periodic box
L. Giusti, A. L. Guerrieri, S. Petrarca +2
We present an exploratory numerical study on the lattice of the color structure of the wave functionals of the SU(3) Yang-Mills theory in the presence of a static pair. I…
QED Corrections to Hadronic Processes in Lattice QCD
N. Carrasco, V. Lubicz, G. Martinelli +4
In this paper, for the first time a method is proposed to compute electromagnetic effects in hadronic processes using lattice simulations. The method can be applied, for example, t…
Topological susceptibility in full QCD with Ginsparg-Wilson fermions
L. Giusti, G. C. Rossi, M. Testa
We show that, if the formula for the topological charge density operator suggested by fermions obeying the Ginsparg-Wilson relation is employed, it is possible to give a precise an…
Finite Volume Effects in Weak Hadronic Decays
C. -J. D. Lin, G. Martinelli, C. T. Sachrajda +1
In this talk we discuss finite-volume computations of two-body hadronic decays below the inelastic threshold (e.g. decays). In particular we show how the relation between…
The Problem on the Lattice
L. Giusti, G. C. Rossi, M. Testa +1
If the expression of the topological charge density operator, suggested by fermions obeying the Ginsparg--Wilson relation, is employed, it is possible to prove on the lattice the v…
The U_A(1) Problem on the Lattice with Ginsparg-Wilson Fermions
L. Giusti, G. C. Rossi, M. Testa +1
We show how it is possible to give a precise and unambiguous implementation of the Witten--Veneziano formula for the eta' mass on the lattice, which looks like the formal continuum…
Quark Masses and Renormalization Constants from Quark Propagator and 3-point Functions
D. Becirevic, V. Lubicz, G. Martinelli +1
We have computed the light and strange quark masses and the renormalization constants of the quark bilinear operators, by studying the large-p^2 behaviour of the lattice quark prop…
On the Definition of Gauge Field Operators in Lattice Gauge-Fixed Theories
L. Giusti, M. L. Paciello, S. Petrarca +2
We address the problem of defining the gluon field on the lattice in terms of the natural link variables. Different regularized definitions are shown, through non perturbative nume…
On the Definition of Gauge Field Operators in Lattice Gauge-Fixed Theories
L. Giusti, M. L. Paciello, S. Petrarca +2
We address the problem of defining the gauge four-potential on the lattice, in terms of the natural link variables. Different regularized definitions are shown, through non perturb…
Non-perturbative improvement of operators with Wilson fermions
C. Dawson, G. Martinelli, G. C. Rossi +4
We outline two methods of constructing improved composite operators using Wilson fermions.
Non-Perturbative Renormalisation and Kaon Physics
M. Testa
A general review is presented on the problem of non perturbative computation of the transition amplitude.
New lattice approaches to the rule
C. Dawson, G. Martinelli, G. C. Rossi +4
Lattice QCD should allow a derivation of the rule from first principles, but numerical calculations to date have been plagued by a variety of problems. After a brief revie…
Non-perturbative improvement of composite operators with Wilson fermions
G. Martinelli, G. C. Rossi, C. T. Sachrajda +3
We propose a method to improve lattice operators composed of Wilson fermions which allows the removal of all corrections of , including those proportional to the quark mass,…
Non-perturbative renormalization in kaon decays
A. Donini, V. Giménez, G. Martinelli +4
We discuss the application of the MPSTV non-perturbative method \cite{NPM} to the operators relevant to kaon decays. This enables us to reappraise the long-standing question of the…