Scientific and personal recollections of Roberto Petronzio

Abstract

This paper aims to recall some of the main contributions of Roberto Petronzio to physics, with a particular regard to the period we have been working together. His seminal contributions cover an extremely wide range of topics: the foundation of the perturbative approach to QCD, various aspects of weak interaction theory, from basic questions (e.g. the mass of the Higgs) to lattice weak interaction, lattice QCD from the beginning to most recent computations.• Perturbative QCD.• Weak interaction in the continuum.• Lattice QCD, the exploratory age.

Preface

“…Roberto was a major contributor to the development of QCD, pioneered the field of non-perturbative Lattice QCD simulations, and gave fundamental contributions to the field and our community. The talk was given by a long time collaborator and close friend, Giorgio Parisi [36].…”

Higher-Twist Mechanism and Inclusive Gluon Production in Pion-Proton Collisions

“…Additionally, we also come across other physical properties of frozen coupling constant in the confinement mechanism suggested in Refs. [46,47] as (1 + 1) dimensional Quantum Electrodyanamics .…”