261 citations · 2.3k across the 80 of their papers we have counts for
80 papers
QCD monopoles, abelian projections and gauge invariance
Adriano Di Giacomo
It is shown that the creation of a monopole is a gauge invariant statement, based on topology. Creating a monopole is independent on the abelian projection in which it is created.…
Chiral symmetry breaking, instantons, and monopoles
Adriano Di Giacomo, Masayasu Hasegawa
The purpose of this study is to show that monopoles induce the chiral symmetry breaking. In order to indicate the evidence, we add one pair of monopoles with magnetic charges to th…
Chiral symmetry breaking and monopoles
Adriano Di Giacomo, Masayasu Hasegawa, Fabrizio Pucci
To understand the relation between the chiral symmetry breaking and monopoles, the chiral condensate which is the order parameter of the chiral symmetry breaking is calculated in t…
Instantons and Monopoles
Adriano Di Giacomo, Masayasu Hasegawa
This study is part of a research program aimed to investigate the relations between instantons, monopoles, and chiral symmetry breaking. Monopoles are important 3-dimensional topol…
Zero modes, Instantons, and Monopoles
Adriano Di Giacomo, Masayasu Hasegawa
The purpose of this study is to show the relations between monopoles instantons and Chiral symmetry breaking. First, in order to show the relation between instantons and monopoles,…
Zero modes of Overlap fermions, instantons, and monopoles
Adriano Di Giacomo, Masayasu Hasegawa
The purpose of this study is to investigate the relations between instantons, monopoles, and Chiral symmetry breaking. The monopoles are important topological configurations existi…
Understanding Color Confinement
Adriano Di Giacomo
Some aspects are discussed of the mechanism of color confinement in QCD by condensation of magnetic monopoles in the vacuum.
The disorder parameter of dual superconductivity in QCD revisited
Claudio Bonati, Guido Cossu, Massimo D'Elia +1
We discover the origin of the pathologies of the disorder parameter used in previous papers to detect dual superconductivity of QCD vacuum, and we remove them by defining an improv…
QCD Monopoles on the Lattice and Gauge Invariance
Adriano Di Giacomo
The long standing problem is solved why the number and the location of monopoles observed in Lattice configurations depend on the choice of the gauge used to detect them, in contra…
Gauge Invariance and Lattice Monopoles
Adriano Di Giacomo
The number and the location of monopoles in Lattice configurations depend on the choice of the gauge, in contrast to the obvious requirement that monopoles, as physical objects, ha…
Detecting monopoles on the lattice
Claudio Bonati, Adriano Di Giacomo, Massimo D'Elia
We address the issue why the number and the location of magnetic monopoles detected on lattice configurations are gauge dependent, in contrast with the physical expectation that mo…
Monopoles, abelian projection, and gauge invariance
Claudio Bonati, Adriano Di Giacomo, Luca Lepori +1
A direct connection is proved between the Non-Abelian Bianchi Identities(NABI), and the abelian Bianchi identities for the 't Hooft tensor. As a consequence the existence of a non-…
Phase diagram of the lattice SU(2) Higgs model
C. Bonati, G. Cossu, M. D'Elia +1
We perform a detailed study of the phase diagram of the lattice Higgs SU(2) model with fixed Higgs field length. Consistently with previsions based on the Fradkin Shenker theorem w…
Surface operators and magnetic degrees of freedom in Yang-Mills theories
A. Di Giacomo, V. I. Zakharov
Magnetic degrees of freedom are manifested through violations of the Bianchi identities and associated with singular fields. Moreover, these singularities should not induce color n…
Study of the systematic errors in the calculation of renormalization constants of the topological susceptibility on the lattice
B. Alles, M. D'Elia, A. Di Giacomo +1
We present a study of the systematic effects in the nonperturbative evaluation of the renormalization constants which appear in the field-theoretical determination of the topologic…
Deconfining transition in Full QCD
J. M. Carmona, M. D'Elia, L. Del Debbio +4
We present evidence that in full QCD with two dynamical quarks confinement is produced by dual superconductivity of the vacuum as in the quenched theory. Preliminary information is…
Color confinement and dual superconductivity in unquenched QCD
J. M. Carmona, M. D'Elia, L. Del Debbio +4
We report on evidence from lattice simulations that confinement is produced by dual superconductivity of the vacuum in full QCD as in quenched QCD. Preliminary information is obtai…
Color confinement and dual superconductivity in full QCD
J. M. Carmona, M. D'Elia, L. Del Debbio +3
We report on evidence that confinement is related to dual superconductivity of the vacuum in full QCD, as in quenched QCD. The vacuum is a dual superconductor in the confining phas…
Gauge-invariant field-strength correlators in pure Yang-Mills and full QCD at finite temperature
M. D'Elia, A. Di Giacomo, E. Meggiolaro
We study by numerical simulations on a lattice the behaviour of the gauge-invariant two-point correlation functions of the gauge-field strengths across the deconfinement phase tran…
QCD vacuum and confinement
A. Di Giacomo
This course consists of two lectures. In the first lecture I discuss why a non perturbative formulation of QCD is needed, and I show that lattice formulation copes with this need,…
On the dependence of the gauge-invariant field-strength correlators in QCD on the shape of the Schwinger string
A. Di Giacomo, E. Meggiolaro
We study, by numerical simulations on a lattice, the dependence of the gauge-invariant two-point field-strength correlators in QCD on the path used to perform the color parallel tr…
Confinement: Results and Perspectives
A. Di Giacomo
An updated review is presented of lattice investigations of colour confinement.
Investigating QCD Vacuum on the lattice
A. Di Giacomo
Investigations on the structure of QCD vacuum from first principles can be done on the lattice. The mechanism of confinement is an example: results from lattice on it are reviewed.
Dual Superconductivity and Chiral Symmetry in Full QCD
J. M. Carmona, M. D'Elia, L. Del Debbio +3
A disorder parameter detecting dual superconductivity of the vacuum is measured across the chiral phase transition in full QCD with two flavours of dynamical staggered fermions. Th…