14.2k citations
Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
- University of PisaIT5.2k papers
- Istituto Nazionale di Fisica Nucleare, Sezione di Roma IIT4k papers
- Centre National de la Recherche ScientifiqueFR3.9k papers
- Istituto Nazionale di Fisica Nucleare, Laboratori Nazionali di FrascatiIT3.7k papers
- Institut National de Physique Nucléaire et de Physique des ParticulesFR3.6k papers
- Istituto Nazionale di Fisica Nucleare, Sezione di GenovaIT3.5k papers
- Istituto Nazionale di Fisica Nucleare, Sezione di BolognaIT3.3k papers
- Rutherford Appleton LaboratoryGB3.3k papers
- European Organization for Nuclear ResearchCH3.1k papers
- The Ohio State UniversityUS3.1k papers
- Commissariat à l'Énergie Atomique et aux Énergies AlternativesFR3k papers
- Massachusetts Institute of TechnologyUS3k papers
25 papers · 2 filters
Testing the efficiency of different improvement programs
Sergio Caracciolo, Andrea Montanari, Andrea Pelissetto
We study the finite-size behaviour of a tree-level on-shell improved action for the N-vector model. We present numerical results for N=3 and analytic results in the large-N limit f…
Mass spectrum and decay constants in the continuum limit
M. Goeckeler, R. Horsley, V. Linke +6
We present first results for light hadron masses, quark masses and decay constants in the continuum limit using O(a) improved fermions at three different values of the gauge coupli…
Nucleon form factors and O(a) Improvement
S. Capitani, M. Gockeler, R. Horsley +9
Nucleon form factors have been extensively studied both experimentally and theoretically for many years. We report here on new results of a high statistics quenched lattice QCD cal…
B-parameters for SUSY Operators
C. R. Allton, L. Conti, A. Donini +5
We present the first lattice measurement, using Non Perturbative Renormalization Method, of the B-parameters of the dimension-six four-fermion operators relevant for the supersymme…
Crossover scaling from classical to non-classical critical behaviour
Sergio Caracciolo, Maria Serena Causo, Andrea Pelissetto +2
Interacting physical systems in the neighborhood of criticality (and massive continuum field theories) can often be characterized by just two physical scales: a (macroscopic) corre…
Operator product expansion and non-perturbative renormalization
Sergio Caracciolo, Andrea Montanari, Andrea Pelissetto
It has been recently proposed to use the operator product expansion to evaluate the expectation values of renormalized operators without the need of a direct computation of the rel…
The large-N phase transition of lattice SU(N) gauge theories
Massimo Campostrini
We investigate the large-N phase transition of lattice SU(N) gauge theories in the Wilson formulation, by performing a Monte Carlo simulation of the twisted Eguchi-Kawai model. A v…
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…
On the Definition of Gauge Field Operators in Lattice Gauge-Fixed Theories
L. Giusti, M. L. Paciello, S. Petrarca +2
We address the problem of defining the gluon field on the lattice in terms of the natural link variables. Different regularized definitions are shown, through non perturbative nume…
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…
Quark masses and the chiral condensate with a non-perturbative renormalization procedure
V. Gimenez, L. Giusti, F. Rapuano +2
We determine the quark masses and the chiral condensate in the MSbar scheme at NNLO from Lattice QCD in the quenched approximation at beta=6.0, beta=6.2 and beta=6.4 using both the…
Monopole Condensation and Color Confinement
A. Di Giacomo, B. Lucini, L. Montesi +1
New evidence is discussed of monopole condensation in the vacuum of SU(2) and SU(3) gauge theories. Monopoles defined by different abelian projections do condense in the transition…
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…
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…
The QCD Chiral Condensate from the Lattice
L. Giusti, F. Rapuano, M. Talevi +1
We determine the chiral condensate from simulations of quenched lattice QCD with Wilson fermions. Our measurements have been obtained with high statistics at three values of the ga…
Resummation of Cactus Diagrams in Lattice QCD
H. Panagopoulos, E. Vicari
We show how to perform a resummation, to all orders in perturbation theory, of a certain class of gauge invariant diagrams in Lattice QCD. These diagrams are often largely responsi…
Non-perturbative Renormalization of Quark bilinears
V. Gimenez, L. Giusti, F. Rapuano +1
We compute non-perturbatively the renormalization constants of quark bilinears on the lattice in the quenched approximation at three values of the coupling beta=6/g_0^2=6.0,6.2,6.4…
B-parameters for DeltaS = 2 Supersymmetric Operators
C. R. Allton, L. Conti, A. Donini +5
We present a calculation of the matrix elements of the most general set of DeltaS=2 dimension-six four-fermion operators. The values of the matrix elements are given in terms of th…
Simulation of Supersymmetric Models with a Local Nicolai Map
Matteo Beccaria, Giuseppe Curci, Erika D'Ambrosio
We study the numerical simulation of supersymmetric models having a local Nicolai map. The mapping can be regarded as a stochastic equation and its numerical integration provides a…
Corrections to Finite-Size Scaling in the Lattice N-Vector Model for Infinite N
Sergio Caracciolo, Andrea Pelissetto
We compute the corrections to finite-size scaling for the N-vector model on the square lattice in the large-N limit. We find that corrections behave as log L/L^2. For tree-level im…
On the Definition of Gauge Field Operators in Lattice Gauge-Fixed Theories
L. Giusti, M. L. Paciello, S. Petrarca +2
We address the problem of defining the gauge four-potential on the lattice, in terms of the natural link variables. Different regularized definitions are shown, through non perturb…
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.
Use of even Grassmann variables to construct effective actions for mesons
Sergio Caracciolo, Fabrizio Palumbo
A quadratic action in even Grassmann variables with the quantum numbers of the pions has been studied. It includes the -field in order to be invariant under SU(2)_L times SU(2)_…