Istituto Nazionale di Fisica Nucleare, Sezione di Pisa

output

19922026

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 1994Show all

46 papers · 1 filter

hep-ex1994★ 21 cited

Measurement of the Bs Meson Lifetime

The CDF Collaboration

The lifetime of the $B_{s}$ meson is measured using the semileptonic decay $B_{s} \to D_{s}^{-} ℓ^{+} ν X$ . The data sample consists of 19.3 pb $^{- 1}$ of $p p ˉ$ collisions at $\sqrt{s…

hep-lat1994★ 18 cited

Large-N phase transition in lattice 2-d principal chiral models

M. Campostrini, P. Rossi, E. Vicari

We investigate the large-N critical behavior of 2-d lattice chiral models by Monte Carlo simulations of U(N) and SU(N) groups at large N. Numerical results confirm strong coupling…

hep-lat1994★ 6 cited

Strong coupling analysis of the large-N 2-d lattice chiral models

M. Campostrini, P. Rossi, E. Vicari

Two dimensional large-N chiral models on the square and honeycomb lattices are investigated by a strong coupling analysis. Strong coupling expansion turns out to be predictive for…

hep-lat1994★ 4 cited

Running coupling constant and correlation length from Wilson loops

Massimo Campostrini, Paolo Rossi, Ettore Vicari

We consider a definition of the QCD running coupling constant $α (μ)$ related to Wilson loops of size $r \times t$ with arbitrary fixed $t / r$ . The schemes defined by these couplings…

hep-lat1994★ 3 cited

Master Wilson loop operators in large-N lattice QCD $_{2}$

P. Rossi, E. Vicari

An explicit solution is found for the most general independent correlation functions in lattice QCD $_{2}$ with Wilson action. The large- $N$ limit of these correlations may be used to…

hep-lat1994★ 1 cited

On $T$ dependence of the static potential $V (T; R)$ in a finite volume

G. ~Cella, V. K. ~Mitrjushkin, A. ~Viceré

We study the dependence on $T$ of the static potential $V (T; R)$ defined from Wilson loops and from Polyakov loop correlators on a finite lattice. For this study we employ a…

hep-lat1994★ 8 cited

Two-Dimensional $O (3)$ $σ$ -Model up to Correlation Length $1 0^{5}$

Sergio Caracciolo, Robert G. Edwards, Andrea Pelissetto +1

We carry out a high-precision Monte Carlo simulation of the two-dimensional $O (3)$ -invariant $σ$ -model at correlation lengths $ξ$ up to $\sim 1 0^{5}$ . Our work employs a new and powe…

hep-lat1994★ 2 cited

New Method for the Extrapolation of Finite-Size Data to Infinite Volume

Sergio Caracciolo, Robert G. Edwards, Sabino J. Ferreira +2

We present a simple and powerful method for extrapolating finite-volume Monte Carlo data to infinite volume, based on finite-size-scaling theory. We discuss carefully its systemati…

nucl-th1994

The Effective Non-Relativistic Hamiltonian for Electron-Nucleus Interaction

R. Ya. Kezerashvili

We present the effective Hamiltonian for an electron-nucleus interaction in non-relativistic limit up to the second order in the inverse nucleon mass. This Hamiltonian takes into a…

hep-ph1994★ 33 cited

Biased discrete symmetry and domain wall problem

G. Dvali, Z. Tavartkiladze, J. Nanobashvili

We reconsider a cosmological evolution of domain walls produced by spontaneous breaking of an approxime discrete symmetry. We show, that domain walls may never collapse even if the…

hep-lat1994★ 6 cited

Monopole condensation ans superconductivity: the $S U (2)$ case

L. Del Debbio, A. Di Giacomo, G. Paffuti +1

We study the behaviour of a suitably defined disorder parameter, showing for the first time monopole condenssation in the ground state of QCD.

hep-lat1994★ 4 cited

Monopole condensation in the ground state of gauge theories: a disorder parameter

L. Del Debbio, A. Di Giacomo, G. Paffuti

We construct a disorder parameter for dual superconductivity of the ground state of $U (1)$ gauge theory.

hep-lat1994★ 94 cited

Asymptotic Scaling in the Two-Dimensional $O (3)$ $σ$ -Model at Correlation Length $1 0^{5}$

Sergio Caracciolo, Robert G. Edwards, Andrea Pelissetto +1

We carry out a high-precision Monte Carlo simulation of the two-dimensional $O (3)$ -invariant $σ$ -model at correlation lengths $ξ$ up to $\sim 1 0^{5}$ . Our work employs a new and powe…

hep-lat1994★ 1 cited

Continuum limit of field theories regularized on a random lattice

B. Alles, M. Beccaria, L. Del Debbio +1

The continuum limit and scaling properties of an asymptotically free field theory regularized on a random lattice are compared with those on a regular square lattice. We work on ra…

hep-th1994★ 12 cited

R-Matrix Formulation of the Quantum Inhomogeneous Groups Iso_qr(N) and Isp_qr(N)

Paolo Aschieri, Leonardo Castellani

The quantum commutations $R T T = T T R$ and the orthogonal (symplectic) conditions for the inhomogeneous multiparametric $q$ -groups of the $B_{n}, C_{n}, D_{n}$ type are found in terms of the $…

hep-ph1994★ 12 cited

Light thresholds in Grand Unified Theories

R. Barbieri, P. Ciafaloni, A. Strumia

In a generic Grand Unified Theory with a relatively small dispersion of the spectrum around the $Z$ -boson and the unification masses, a connection is established, exact at one loop…

hep-th1994★ 5 cited

Spectral stochastic processes arising in quantum mechanical models with a non-L2 ground state

J. Loffelholz, G. Morchio, F. Strocchi

A functional integral representation is given for a large class of quantum mechanical models with a non--L2 ground state. As a prototype the particle in a periodic potential is dis…

hep-ex1994★ 21 cited

Polarized Bhabha Scattering and a Precision Measurement of the Electron Neutral Current Couplings

the SLD Collaboration

We present the first measurement of the left-right asymmetry in Bhabha scattering with a polarized electron beam. The effective electron vector and axial vector couplings to the Z0…

hep-ex1994★ 2 cited

Determination of the branching ratios $Γ (K_{L} \to 3 π^{0}) /Γ (K_{L} \to π^{+} π^{-} π^{0})$ and $Γ (K_{L} \to 3 π^{0}) /Γ (K_{L} \to π e ν)$

A. Kreutz, M. Holder, M. Rost +27

Improved branching ratios were measured for the $K_{L} \to 3 π^{0}$ decay in a neutral beam at the CERN SPS with the NA31 detector: $Γ(K_L \to 3 π^0) / Γ(K_L \to π^+ π^- π^0) = 1.611…

hep-ph1994★ 347 cited

Signals For Supersymmetric Unification

R. Barbieri, L. J. Hall

Using the Yukawa couplings of the minimal supersymmetric SU(5) model, the rates for $μ \to e γ$ , $μ \to e$ conversion and $τ \to μ γ$ are computed. For a selectron mass of 100 GeV, and…

hep-th1994★ 11 cited

Inhomogeneous quantum groups IGL_{q,r}(N): Universal enveloping algebra and differential calculus

P. Aschieri, L. Castellani

A review of the multiparametric linear quantum group GL_qr(N), its real forms, its dual algebra U(gl_qr(N)) and its bicovariant differential calculus is given in the first part of…

hep-lat1994★ 24 cited

Heating and small-size instantons in the $O (3) σ$ model on the lattice

F. Farchioni, A. Papa

We study the role of small-size instantons in the determination of the topological susceptibility of the 2-d $O (3) σ$ model on the lattice. In particular, we analyze how they af…

hep-ph1994

Semiglobal Alice Strings

G. Dvali, G. Senjanovi'{c}

We show that in certain theories with topologically trivial quotient space of spontaneously broken gauge symmetry there can exist topologically stable strings that carry nonabelian…

hep-ph1994★ 19 cited

Fermion masses and mixings in a flavour symmetric GUT

Riccardo Barbieri, Gia Dvali, Alessandro Strumia

We describe a supersymmetric Grand Unified Theory based on the gauge group $\SU(5)^3$, or $\SO(10)^3$, invariant under the interchange of any~SU(5), or~SO(10), with each family mul…