261 citations · 2.3k across the 80 of their papers we have counts for
9 papers · 1 filter
A critical comparison of different definitions of topological charge on the lattice
B. Alles, M. D'Elia, A. Di Giacomo +1
A detailed comparison is made between the field-theoretic and geometric definitions of topological charge density on the lattice. Their renormalizations with respect to continuum a…
The spin content of the proton in full QCD
B. Alles, G. Boyd, M. D'Elia +1
We present preliminary results on the proton spin structure function in full QCD. The measurement has been done using 4 flavours of staggered fermions and an improved definition of…
Topology in SU(2) Yang-Mills theory
B. Alles, M. D'Elia, A. Di Giacomo +1
New results on the topology of the SU(2) Yang-Mills theory are presented. At zero temperature we obtain the value of the topological susceptibility by using the recently introduced…
Field strength correlators in QCD with dynamical fermions
Massimo D'Elia, Adriano Di Giacomo, Enrico Meggiolaro
We determine, by numerical simulations on a lattice, the gauge-invariant two-point correlation functions of the gauge field strengths in the QCD vacuum with four flavours of dynami…
A disorder parameter for dual superconductivity in gauge theories
A. Di Giacomo, B. Lucini, L. Montesi +1
Dual superconductivity in the confining phase of gauge theories is discussed in terms of a disorder parameter which vanishes in normal phase and is different from zero in the super…
A disorder parameter for dual superconductivity in gauge theories
A. Di Giacomo, G. Paffuti
A detailed discussion is given of the disorder parameter for dual superconductivity of lattice gauge theories, introduced in a previous paper, and of its relation to other approach…
Topology at zero and finite T in SU(2) Yang-Mills theory
B. Alles, M. D'Elia, A. Di Giacomo
We determine the topological susceptibility χat T=0 and its behaviour at finite T across the deconfining transition in pure SU(2) gauge theory. We use an improved topological charg…
Field strength correlators in full QCD
Massimo D'Elia, Adriano Di Giacomo, Enrico Meggiolaro
We study, by numerical simulations on a lattice, the behaviour of the gauge-invariant two-point correlation functions of the gauge field strengths in the QCD vacuum with dynamical…
Magnetic Monopoles, Gauge Invariant Dynamical Variables and Georgi Glashow Model
Adriano Di Giacomo, Manu Mathur
We investigate Georgi-Glashow model in terms of a set of explicitly SO(3) gauge invariant dynamical variables. In the new description a novel compact abelian gauge invariance emerg…