14.2k citations
Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
- University of Rome Tor VergataIT2.7k papers
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13 papers · 1 filter
Results from a Non-Perturbative Renormalization of Lattice Operators
G. Martinelli, C. Pittori, C. T. Sachrajda +2
We propose a general renormalization method, which avoids completely the use of lattice perturbation theory. We present the results from its numerical applications to two-fermion o…
Universal behaviour of the SU(2) running coupling constant in the continuum limit
Marco Guagnelli
We present data from the ALPHA Collaboration about lattice calculation of SU(2) pure--gauge running coupling constant, obtained with two different definitions of the coupling itsel…
Investigation of the Neutron Form Factors by Inclusive Quasi-Elastic Scattering of Polarized Electrons off Polarized He: A Theoretical Overview
C. Ciofi degli Atti, E. Pace, G. Salmè
The theory of quasi-elastic inclusive scattering of polarized leptons off polarized He is critically reviewed and the origin of different expressions for the polarized nuclear…
Universality and the approach to the continuum limit in lattice gauge theory
G. de Divitiis, R. Frezzotti, M. Guagnelli +5
The universality of the continuum limit and the applicability of renormalized perturbation theory are tested in the SU(2) lattice gauge theory by computing two different non-pertur…
Lattice Calculation of D- and B-meson Semileptonic Decays, using the Clover Action at beta=6.0 on APE
C. R. Allton, M. Crisafulli, V. Lubicz +14
We present the results of a high statistics lattice calculation of hadronic form factors relevant for and meson semi-leptonic decays into light pseudoscalar and vector mes…
A General Method for Non-Perturbative Renormalization of Lattice Operators
G. Martinelli, C. Pittori, C. T. Sachrajda +2
We propose a non-perturbative method for computing the renormalization constants of generic composite operators. This method is intended to reduce some systematic errors, which are…
Gribov Noise on the Lattice Axial Current Renormalisation Constant
Maria Luigia Paciello, Silvano Petrarca, Bruno Taglienti +1
We study the influence of Gribov copies, in the Landau gauge, on the lattice renormalisation constant of the axial current, obtained from a Ward identity on quark state correlation…
ALE Instantons in String Effective Theory
M. Bianchi, F. Fucito, M. Martellini +1
We show that the classical equations of motion of the low-energy effective field theory describing the massless modes of the heterotic (or type I) string admit two classes of super…
Non perturbative determination of the running coupling constant in quenched SU(2)
G. M. de Divitiis, R. Frezzotti, M. Guagnelli +1
Through a finite size renormalization group technique we calculate the running coupling constant for quenched SU(2) with a few percent error over a range of energy varying by a fac…
Matrix models as solvable glass models
L. F. Cugliandolo, J. Kurchan, G. Parisi +1
We present a family of solvable models of interacting particles in high dimensionalities without quenched disorder. We show that the models have a glassy regime with aging effects.…
AND : A THEORETICAL REAPPRAISAL
M. Ciuchini, E. Franco, G. Martinelli +2
We present upgraded theoretical predictions for inclusive and exclusive radiative decays of {\it B} mesons. Our results include those next-to-leading order corrections that have al…
Hard Constituent Quarks and Electroweak Properties of Pseudoscalar Mesons
F. Cardarelli, I. L. Grach, I. M. Narodetskii E. Pace +2
The high momentum components generated in the wave function of pseudoscalar mes* by the one-gluon-exchange interaction are investigated within a relativistic constituent quark mode…
Deep Inelastic Scattering in Improved Lattice QCD. I. The first moment of structure functions
Stefano Capitani, Giancarlo Rossi
We present the complete 1-loop perturbative computation of the renormalization constants and mixing coefficients of the operators that measure the first moment of deep inelastic sc…