Istituto Nazionale di Fisica Nucleare, Roma Tor Vergata

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19912026

most citedObservation of Gravitational Waves from a Binary Black Hole Merger

14.2k citations

researchers with a paper here

Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.

collaborating institutions

Showing 2004Show all

29 papers · 1 filter

nlin.CD2004★ 141 cited

Lattice Boltzmann method at finite-Knudsen numbers

Federico Toschi, Sauro Succi

A modified lattice Boltzmann model with a stochastic relaxation mechanism mimicking "virtual'' collisions between free-streaming particles and solid walls is introduced. This modif…

hep-ex2004★ 19 cited

Measurement of the leptonic decay widths of the phi-meson with the KLOE detector

F. Ambrosino

The phi-meson leptonic widths, Gee and Gmm, are obtained, respectively, from the e+e- forward-backward asymmetry and the muon cross section around the phi-mass energy. We find Gee=…

nucl-ex2004★ 5 cited

Eta photoproduction on the neutron at GRAAL: Measurement of the differential cross section

D. Rebreyend

In this contribution, we will present our first preliminary measurement of the differential cross section for the reaction gamma+n->eta+n. Comparison of the reactions gamma+p->eta+…

hep-ex2004★ 24 cited

Upper limit on the eta -> pi+pi- branching ratio with the KLOE experiment

KLOE collaboration

We have searched with the KLOE detector for the P and CP violating decay eta -> pi^+pi^- in a sample of 1.55 x 10^7 eta's from the decay phi -> eta gamma of phi mesons produced in…

physics.ins-det2004★ 20 cited

Ageing test of the ATLAS RPCs at X5-GIF

G. Aielli, M. Alviggi, V. Ammosov +32

An ageing test of three ATLAS production RPC stations is in course at X5-GIF, the CERN irradiation facility. The chamber efficiencies are monitored using cosmic rays triggered by a…

nlin.CG2004★ 184 cited

Analytical calculation of slip flow in lattice Boltzmann models with kinetic boundary conditions

Mauro Sbragaglia, Sauro Succi

We present a mathematical formulation of kinetic boundary conditions for Lattice Boltzmann schemes in terms of reflection, slip, and accommodation coefficients. It is analytically…

hep-th2004★ 279 cited

On tadpoles and vacuum redefinitions in String Theory

E. Dudas, G. Pradisi, M. Nicolosi +1

Tadpoles accompany, in one form or another, all attempts to realize supersymmetry breaking in String Theory, making the present constructions at best incomplete. Whereas these tadp…

hep-ph2004★ 3 cited

The pion electromagnetic form-factor in a QCD-inspired model

J. P. B. C. de Melo, T. Frederico, E. Pace +1

We present detailed numerical results for the pion space-like electromagnetic form factor obtained within a recently proposed model of the pion electromagnetic current in a confini…

astro-ph2004★ 22 cited

Probing the Light Speed Anisotropy with respect to the Cosmic Microwave Background Radiation Dipole

V. G. Gurzadyan, J. -P. Bocquet, A. Kashin +31

We have studied the angular fluctuations in the speed of light with respect to the apex of the dipole of Cosmic Microwave Background (CMB) radiation using the experimental data obt…

hep-lat2004★ 36 cited

Exploring the phase structure of lattice QCD with twisted mass quarks

F. Farchioni, C. Urbach, R. Frezzotti +7

The phase structure of zero temperature twisted mass lattice QCD is investigated. We find strong metastabilities in the plaquette observable when the untwisted quark mass sweeps ac…

hep-th2004★ 81 cited

Instantons on Quivers and Orientifolds

Francesco Fucito, Jose F. Morales, Rubik Poghossian

We compute the prepotential for gauge theories descending from $N = 4$ SYM via quiver projections and mass deformations. This accounts for gauge theories with product gauge gr…

astro-ph2004★ 19 cited

Cumulative analysis of the association between the gravitational wave detectors NAUTILUS and EXPLORER and the gamma-ray bursts detected by BATSE and BeppoSAX

P. Astone, D. Babusci, M. Bassan +23

The statistical association between the output of the Gravitational Wave (GW) detectors EXPLORER and NAUTILUS and a list of Gamma Ray Bursts (GRBs) detected by the satellite experi…

hep-th2004★ 56 cited

D-Brane Dynamics in Dp-Brane Background

Kamal L. Panigrahi

By using Dirac-Born-Infeld action we study the real time dynamics of D-branes in the vicinity of a stack of Dp-branes where the role of the tachyon of the open string models is pla…

hep-lat2004★ 230 cited

Chirally improving Wilson fermions II. Four-quark operators

R. Frezzotti, G. C. Rossi

In this paper we discuss how the peculiar properties of twisted lattice QCD at maximal twist can be employed to set up a consistent computational scheme in which, despite the expli…

hep-ex2004★ 220 cited

Measurement of $σ (e^{+} e^{-} \to π^{+} π^{-} γ)$ and extraction of $σ (e^{+} e^{-} \to π^{+} π^{-})$ below 1 {\rm GeV} with the KLOE detector

The KLOE Collaboration, A. Aloisio

We have measured the cross section $σ (e^{+} e^{-} \to π^{+} π^{-} γ)$ at an energy $W = m_{ϕ} = 1.02$ GeV with the KLOE detector at the electron-positron collider DA $Φ$ NE. From the dependence of th…

hep-th2004★ 99 cited

Multi instanton calculus on ALE spaces

Francesco Fucito, Jose F. Morales, Rubik Poghossian

We study SYM gauge theories living on ALE spaces. Using localization formulae we compute the prepotential (and its gravitational corrections) for SU(N) supersymmetric ${\cal N}=2,…

hep-lat2004★ 64 cited

Twisted mass quarks and the phase structure of lattice QCD

F. Farchioni, R. Frezzotti, K. Jansen +7

The phase structure of zero temperature twisted mass lattice QCD is investigated. We find strong metastabilities in the plaquette observable when the untwisted quark mass assumes p…

hep-lat2004★ 35 cited

Non-perturbative renormalization of lattice operators in coordinate space

V. Gimenez, L. Giusti, S. Guerriero +6

We present the first numerical implementation of a non-perturbative renormalization method for lattice operators, based on the study of correlation functions in coordinate space at…

nlin.SI2004★ 40 cited

Integrable Hamiltonian systems with vector potentials

Giuseppe Pucacco, Kjell Rosquist

We investigate integrable 2-dimensional Hamiltonian systems with scalar and vector potentials, admitting second invariants which are linear or quadratic in the momenta. In the case…

hep-th2004★ 6 cited

Brane Solutions with/without Rotation in PP-wave Spacetime

Rashmi R. Nayak, Kamal L. Panigrahi, Sanjay Siwach

We present two classes of brane solutions in pp-wave spacetime. The first class of branes with a rotation parameter are constructed in an exact string background with NS-NS and R-R…

hep-lat2004★ 50 cited

Twisted mass QCD and lattice approaches to the $Δ I = 1/2$ rule

C. Pena, S. Sint, A. Vladikas

Twisted mass lattice QCD (tmQCD), generalised to four Wilson quark flavours, can be used for the computation of some weak matrix elements related to $Δ I = 1/2$ transitions. Besides e…

hep-ph2004★ 11 cited

Layered Higgs Phase as a Possible Field Localisation on a Brane

P. Dimopoulos, K. Farakos

So far it has been found by using lattice techniques that in the anisotropic five--dimensional Abelian Higgs model, a layered Higgs phase exists in addition to the expected five--d…

hep-ph2004★ 16 cited

Isospin Mixing of Narrow Pentaquark States

G. C. Rossi, G. Veneziano

Interpreting the recently discovered narrow exotic baryons as pentaquark states, we discuss, along an old argument of ours, the isospin mixing occurring within the two doublets of…

hep-lat2004★ 9 cited

The continuum limit of the quark mass step scaling function in quenched lattice QCD

M. Guagnelli, J. Heitger, F. Palombi +2

The renormalisation group running of the quark mass is determined non-perturbatively for a large range of scales, by computing the step scaling function in the Schroedinger Functio…