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
Critical Dynamics of the Hybrid Monte Carlo Algorithm
SESAM, TXL collaboration, : +13
We investigate the critical dynamics of the Hybrid Monte Carlo algorithm approaching the chiral limit of standard Wilson fermions. Our observations are based on time series of leng…
Monte Carlo results for three-dimensional self-avoiding walks
Sergio Caracciolo, Maria Serena Causo, Andrea Pelissetto
We discuss possible sources of systematic errors in the computation of critical exponents by renormalization-group methods, extrapolations from exact enumerations and Monte Carlo s…
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…
Improved actions for the two-dimensional sigma-model
Sergio Caracciolo, Andrea Montanari, Andrea Pelissetto
For the O(N) sigma-model we studied the improvement program for actions with two- and four-spin interactions. An interesting example is an action which is reflection-positive, on-s…
High-precision computation of two-loop Feynman diagrams with Wilson fermions
Stefano Capitani, Sergio Caracciolo, Andrea Pelissetto +1
We apply the coordinate-space method by Luescher and Weisz to the computation of two-loop diagrams in full QCD with Wilson fermions on the lattice. The essential ingredient is the…
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…
FFT for the APE Parallel Computer
Thomas Lippert, Klaus Schilling, Federico Toschi +2
We present a parallel FFT algorithm for SIMD systems following the `Transpose Algorithm' approach. The method is based on the assignment of the data field onto a 1-dimensional ring…
A High Statistics Lattice Calculation of Quark Masses with a Non-Perturbative Renormalization Procedure
L. Giusti
We present results of a high statistics study (O(2000) configurations) of the quark masses in the MS-bar scheme from Lattice QCD in the quenched approximation at beta=6.0, beta=6.2…
Scaling Contributions to the Free Energy in the 1/N Expansion of O(N) Nonlinear Sigma Models in d-Dimensions
Mehmet Dilaver, Paolo Rossi, Yigit Gunduc
Within the 1/N expansion of O(N) nonlinear models for it is possible to separate consistently the spin-wave and the massive-mode contributions to the scaling part of…
Three-Loop Results in QCD with Wilson Fermions
B. Alles, C. Christou, A. Feo +2
We calculate the third coefficient of the lattice beta function in QCD with Wilson fermions, extending the pure gauge results of Luescher and Weisz; we show how this coefficient mo…
Progress and status of APEmille
APE collaboration, A. Bartoloni, S. Cabasino +19
We report on the progress and status of the APEmille project: a SIMD parallel computer with a peak performance in the TeraFlops range which is now in an advanced development phase.…
Light Quark Physics with Dynamical Wilson Fermions
SESAM, TkL collaborations, : +14
We present results for spectroscopy, quark masses and decay constants obtained from SESAM's and TkL's large statistics simulations of QCD with two dynamical Wilson fermions.
The role of diffeomorphisms in the integration over a finite dimensional space of geometries
Pietro Menotti
Starting from the De Witt supermetric and limiting ourselves to a family of geometries characterized by a finite number of geometric invariants we extract the unique integration me…
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…
Universality of subleading corrections for self-avoiding walks in presence of one dimensional defects
Sergio Caracciolo, Maria Serena Causo, Andrea Pelissetto
We study three-dimensional self-avoiding walks in presence of a one-dimensional excluded region. We show the appearance of a universal sub-leading exponent which is independent of…
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…
The Coulomb law in the pure gauge U(1) theory on a lattice
G. Cella, U. M. Heller, V. K. Mitrjushkin +1
We study the heavy charge potential in the Coulomb phase of pure gauge compact U(1) theory on the lattice. We calculate the static potential from Wilson loops on…
Quenched Hadron Spectrum and Decay Constants on the lattice
L. Giusti
In this talk we present the results obtained from a study of (quenched) lattice configurations from the APE collaboration, at , using both the Wils…
A High Statistics Lattice Calculation of Heavy-Light Meson Decay Constants
C. R. Allton, L. Conti, M. Crisafulli +3
We present a high statistics study of the D- and B-meson decay constants. The results were obtained by using the Clover and Wilson lattice actions at two different values of the la…
On the evaluation of universal non-perturbative constants in O(N) sigma models
M. Campostrini, A. Pelissetto, P. Rossi +1
We investigate the relation between on-shell and zero-momentum non-perturbative quantities entering the parametrization of the two-point Green's function of two-dimensional non-lin…