2.8k citations
Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
- University of MilanIT3.7k papers
- Centre National de la Recherche ScientifiqueFR2.6k papers
- Institut National de Physique Nucléaire et de Physique des ParticulesFR2.4k papers
- Istituto Nazionale di Fisica Nucleare, Sezione di Roma IIT2.4k papers
- Istituto Nazionale di Fisica Nucleare, Sezione di GenovaIT2.3k papers
- University of EdinburghGB2.2k papers
- National Institute for Subatomic PhysicsNL2.2k papers
- University of ManchesterGB2.2k papers
- Istituto Nazionale di Fisica Nucleare, Laboratori Nazionali di FrascatiIT2.1k papers
- Rutherford Appleton LaboratoryGB2.1k papers
- University of LiverpoolGB2.1k papers
- Heidelberg UniversityDE2.1k papers
75 papers · 1 filter
The Quantum Field Theory of the Kaon Oscillations
D. Cocolicchio, M. Viggiano
We consider the covariant formulation of the kaon mixing in the context of the propagator method. It results important to check the possibility of a sizable effect in the vacuum re…
The nonminimal scalar multiplet coupled to supersymmetric Yang-Mills
Silvia Penati, Daniela Zanon
We consider the coupling of nonminimal scalar multiplets to supersymmetric Yang-Mills in four dimensions and compute the one-loop contribution to the low-energy effective action in…
On Localized "X-shaped" Superluminal Solutions to Maxwell Equations
Erasmo Recami
In this paper we extend for the case of Maxwell equations the "X-shaped" solutions previously found in the case of scalar (e.g., acoustic) wave equations. Such solutions are locali…
Asymptotic Dynamics in Scalar Field Theory: Anomalous Relaxation
D. Boyanovsky, C. Destri, H. J. de Vega +2
We analyze the dynamics of dissipation and relaxation in the unbroken and broken symmetry phases of scalar theory in the nonlinear regime for large initial energy densities, and af…
Chaos and Thermalization in a Dynamical Model of Two Interacting Particles
F. Borgonovi, I. Guarneri, F. M. Izrailev +1
A quantum dynamical model of two interacting spins, with chaotic and regular components, is investigated using a finite two-particles symmetrized basis. Chaotic eigenstates give ri…
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…
Floquet Energies and Quantum Hall Effect in a Periodic Potential
Ruggero Ferrari
The Quantum Hall Effect for free electrons in external periodic field is discussed without using the linear response approximation. We find that the Hall conductivity is related in…
Structure Function, Final States and Angular Ordering at Small x
M. Scorletti
This talks examines the effect of angular ordering on the small-x evolution of the unintegrated gluon distribution, and discusses the characteristic function for the CCFM equation.
On the Evaluation of Compton Scattering Amplitudes in String Theory
A. Pasquinucci, M. Petrini
We consider the Compton amplitude for the scattering of a photon and a (massless) ``electron/positron'' at one loop (i.e. genus one) in a four-dimensional fermionic heterotic strin…
Perturbative renormalization group, exact results and high temperature series to order 21 for the N-vector spin models on the square lattice
P. Butera, M. Comi
High temperature expansions for the susceptibility and the second correlation moment of the classical N-vector model (also known as the O(N) symmetric Heisenberg classical spin mod…
The nonminimal scalar multiplet: duality, sigma-model, beta-function
Silvia Penati, Andrea Refolli, Antoine Van Proeyen +1
We compute in superspace the one-loop beta-function for the nonlinear sigma-model defined in terms of the nonminimal scalar multiplet. The recently proposed quantization of this co…
A New Quark Model Approach to Hyperon Semi-Leptonic Decays
Philip G. Ratcliffe
A new analysis of hyperon semi-leptonic decay data is presented, based on simple and general arguments for an SU(3)-breaking structure of the couplings involved. The results obtain…
Cutting-Decimation Renormalization for diffusive and vibrational dynamics on fractals
Raffaella Burioni, Davide Cassi, Sofia Regina
Recently, we pointed out that on a class on non exactly decimable fractals two different parameters are required to describe diffusive and vibrational dynamics. This phenomenon we…
Updated measurement of the tau lepton lifetime
The ALEPH Collaboration
A new measurement of the mean lifetime of the tau lepton is presented. Three different analysis methods are applied to a sample of 90000 tau pairs, collected in 1993 and 1994 with…
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…
Quantum Fractal Eigenstates
Giulio Casati, Giulio Maspero, Dima L. Shepelyansky
We study quantum chaos in open dynamical systems and show that it is characterized by quantum fractal eigenstates located on the underlying classical strange repeller. The states w…
Searches for Supersymmetry in the photon(s) plus missing energy channels at = 161 GeV and 172 GeV
ALEPH Collaboration
Searches for supersymmetric particles in channels with one or more photons and missing energy have been performed with data collected by the ALEPH detector at LEP. The data consist…
Critical parameters of N-vector spin models on 3d lattices from high temperature series extended to order beta^{21}
P. Butera, M. Comi
High temperature expansions for the free energy, the susceptibility and the second correlation moment of the classical N-vector model [also denoted as the O(N) symmetric classical…
The WKB Approximation without Divergences
D. Cocolicchio, M. Viggiano
In this paper, the WKB approximation to the scattering problem is developed without the divergences which usually appear at the classical turning points. A detailed procedure of co…
Hard-Soft Renormalization and the Exact Renormalization Group
M. Pernici, M. Raciti, F. Riva
The Wilsonian exact renormalization group gives a natural framework in which ultraviolet and infrared divergences can be treated separately. In massless QED we introduce, as the on…
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…
The Optical Analogue of CP Violation
D. Cocolicchio, L. Telesca, M. Viggiano
The peculiar features of the mixing in the neutral pseudoscalar mesons K0--antiK0 can be introduced by the analogy to the optical polarization. The time-reversed not-invariant proc…
D0-Branes, Constrained Instantons and D=4 Super Yang-Mills Theories
J. L. F. Barbon, A. Pasquinucci
We consider in more detail the role of D0-branes as instantons in the construction of SU(N) Super Yang-Mills and Super QCD theories in four space-time dimensions with D4, D6 and NS…
Next-to-Leading-Order Corrections to the Production of Heavy-Flavour Jets in e+e- Collisions
P. Nason, C. Oleari
In this paper we describe the calculation of the process e+e- -> Z/gamma -> QQbar + X, where Q is a heavy quark, at order alpha_s^2.