261 citations · 2.3k across the 80 of their papers we have counts for
9 papers · 2 filters
Gauge-invariant nonlocal quark condensates in QCD
M. D'Elia, A. Di Giacomo, E. Meggiolaro
We study, by numerical simulations on a lattice, the behaviour of the gauge-invariant nonlocal quark condensates in the QCD vacuum both in the quenched approximation and with four…
Gauge-invariant quark-antiquark nonlocal condensates in lattice QCD
M. D'Elia, A. Di Giacomo, E. Meggiolaro
We study, by numerical simulations on a lattice, the behaviour of the gauge-invariant quark-antiquark nonlocal condensates in the QCD vacuum with dynamical fermions. A determinatio…
Decorrelating Topology with HMC
Th. Lippert, B. Alles, G. Bali +9
The investigation of the decorrelation efficiency of the HMC algorithm with respect to vacuum topology is a prerequisite for trustworthy full QCD simulations, in particular for the…
Progress in understanding colour confinement
A. Di Giacomo, B. Lucini, L. Montesi +1
New results from lattice are presented,which demonstrate that monopoles condense in the vacuum of confined phase of QCD, which is thus a dual superconductor. Monopoles defined by d…
Gauge invariant Field Strength Correlators in QCD
A. Di Giacomo, M. D'Elia, H. Panagopoulos +1
Gauge invariant correlators in QCD are studied on the lattice.A Systematic determination of the correlation lengths for gluon field strength correlators and quark correlators is ma…
Condensation of vortices and disorder parameter in 3d Heisenberg model
A. Di Giacomo, D. Martelli, G. Paffuti
The 3d Heisenberg model is studied from a dual point of view. It is shown that the disordered phase corresponds to condensation of vortices in the vacuum, and the critical indices…
Topological properties of full QCD at the phase transition
B. Alles, M. D'Elia, A. Di Giacomo +1
We investigate the topological properties of the QCD vacuum with 4 flavours of dynamical staggered fermions at finite temperature. To calculate the topological susceptibility we us…
Scanning the Topological Sectors of the QCD Vacuum with Hybrid Monte Carlo
B. Alles, G. Bali, M. D'Elia +10
We address a long standing issue and determine the decorrelation efficiency of the Hybrid Monte Carlo algorithm (HMC), for full QCD with Wilson fermions, with respect to vacuum top…
Monopole condensation and colour confinement
A. Di Giacomo
The evidence is reviewed for the mechanism of colour confinement in QCD by dual superconductivity of the ground state, i.e. by condensation of monopoles.