3.5k citations
Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
- University of ParmaIT415 papers
- Istituto Nazionale di Fisica Nucleare, Sezione di Milano BicoccaIT88 papers
- Istituto Nazionale di Fisica Nucleare, Sezione di FirenzeIT84 papers
- Istituto Nazionale di Fisica NucleareIT68 papers
- Sapienza University of RomeIT61 papers
- Centre National de la Recherche ScientifiqueFR52 papers
- Istituto Nazionale di Fisica Nucleare, Sezione di PadovaIT50 papers
- University of PisaIT50 papers
- Istituto Nazionale di Fisica Nucleare, Sezione di PisaIT49 papers
- Istituto Nazionale di Fisica Nucleare, Sezione di Roma IIT48 papers
- University of FlorenceIT44 papers
- Max Planck Institute for Gravitational PhysicsDE42 papers
16 papers · 1 filter
Infrared Renormalons and Finite Volume
F. DiRenzo, G. Marchesini, E. Onofri
We analyze the perturbative expansion of a condensate in the O(N) non-linear sigma model for large N on a two dimensional finite lattice. On an infinite volume this expansion is af…
Small-Angle Bhabha Scattering at LEP1. Analytical Results for Wide-Narrow Angular Acceptance
A. B. Arbuzov, G. I. Gach, V. Yu. Gontchar +3
Analytical formulae for small-angle Bhabha scattering cross-section at LEP1 are given for the case of wide-narrow angular acceptance. Inclusive and calorimeter event selections are…
Gauge invariant action at the ultraviolet cutoff
M. Bonini, G. Marchesini
We show that it is possible to formulate a gauge theory starting from a local action at the ultraviolet (UV) momentum cutoff which is BRS invariant. One has to require that fields…
Dynamics as Shadow of Phase Space Geometry
J. R. Klauder, P. Maraner
Starting with the generally well accepted opinion that quantizing an arbitrary Hamiltonian system involves picking out some additional structure on the classical phase space (the {…
An Extension of the Electroweak Model with Decoupling at Low Energy
R. Casalbuoni, S. De Curtis, D. Dominici +1
We present a renormalizable model of electroweak interactions containing an extra symmetry. The masses of the corresponding gauge bosons and of the assoc…
Small-Angle Bhabha Scattering
A. B. Arbuzov, V. S. Fadin, E. A. Kuraev +3
We present the calculation of the elastic and inelastic high--energy small--angle electron--positron scattering with a {\it per mille} accuracy. PACS numbers 12.15.Lk, 12.20.--m, 1…
Small-Angle Electron-Positron Scattering
A. B. Arbuzov, V. S. Fadin, E. A. Kuraev +3
We consider small--angle electron--positron scattering in Quantum Electrodynamics. Leading logarithmic contributions to the cross--section are explicitly calculated to three loop.…
On the relation between the connection and the loop representation of quantum gravity
Roberto De Pietri
Using Penrose binor calculus for () tensor expressions, a graphical method for the connection representation of Euclidean Quantum Gravity (real connection) is cons…
The present theoretical error on the Bhabha scattering cross section in the luminometry region at LEP
A. Arbuzov, M. Bigi, H. Burkhardt +19
The results concerning the theoretical evaluation of the small-angle Bhabha Scattering cross section obtained during the Workshop on Physics at LEP2 (CERN, Geneva, Switzerland, 199…
Beta function and infrared renormalons in the exact Wilson renormalization group in Yang-Mills theory
M. Bonini, G. Marchesini, M. Simionato
We discuss the relation between the Gell-Mann-Low beta function and the ``flowing couplings'' of the Wilsonian action of the exact renormalization group (RG) at the scale…
Gauge Invariance, the Quantum Action Principle, and the Renormalization Group
Marco D'Attanasio, Tim R. Morris
If the Wilsonian renormalization group (RG) is formulated with a cutoff that breaks gauge invariance, then gauge invariance may be recovered only once the cutoff is removed and onl…
The Top Cross Section in Hadronic Collisions
S. Catani, M. L. Mangano, P. Nason +1
We reexamine the top quark production cross section at the Tevatron and LHC, in the light of recent progress on the resummation of logarithmic soft gluon corrections. We find that…
Evolution of Inhomogeneous Condensates after Phase Transitions
D. Boyanovsky, M. D'Attanasio, H. J. de Vega +1
Using the O(4) linear model, we address the topic of non-equilibrium relaxation of an inhomogeneous initial configuration due to quantum and thermal fluctuations. The space-tim…
Geometry Eigenvalues and Scalar Product from Recoupling Theory in Loop Quantum Gravity
Roberto De Pietri, C. Rovelli
We summarize the basics of the loop representation of quantum gravity and describe the main aspects of the formalism, including its latest developments, in a reorganized and consis…
Gauging kinematical and internal symmetry groups for extended systems: the Galilean one-time and two-times harmonic oscillators
Roberto De Pietri, L. Lusanna, Massimo Pauri
The possible external couplings of an extended non-relativistic classical system are characterized by gauging its maximal dynamical symmetry group at the center-of-mass. The Galile…
Wilson Renormalization Group formulation of Real Time thermal field theories
Marco D'Attanasio, Massimo Pietroni
We apply Renormalization Group techniques to the Real Time formulation of thermal field theory. Due to the separation between the and the parts of the propagator in…