3.9k citations
Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
- University of PaviaIT2.8k papers
- Istituto Nazionale di Fisica Nucleare, Laboratori Nazionali di FrascatiIT2.6k papers
- European Organization for Nuclear ResearchCH2.5k papers
- Istituto Nazionale di Fisica Nucleare, Sezione di BolognaIT2.5k papers
- Centre National de la Recherche ScientifiqueFR2.4k papers
- Istituto Nazionale di Fisica Nucleare, Sezione di Roma IIT2.4k papers
- National and Kapodistrian University of AthensGR2.4k papers
- The Ohio State UniversityUS2.4k papers
- Commissariat à l'Énergie Atomique et aux Énergies AlternativesFR2.4k papers
- Institut de Recherche sur les Lois Fondamentales de l'UniversFR2.4k papers
- Istituto Nazionale di Fisica Nucleare, Sezione di PisaIT2.4k papers
- Institut National de Physique Nucléaire et de Physique des ParticulesFR2.3k papers
23 papers · 1 filter
Optimal purification of single qubits
J. I. Cirac, A. K. Ekert, C. Macchiavello
We introduce a new decomposition of the multiqubit states of the form and employ it to construct the optimal single qubit purification procedure. The same decomposi…
Linking Parton Distributions to Form Factors and Compton Scattering
M. Diehl, T. Feldmann, R. Jakob +1
We relate ordinary and skewed parton distributions to soft overlap contributions to elastic form factors and large angle Compton scattering, using light-cone wave functions in a Fo…
Optimal state estimation for d-dimensional quantum systems
D. Bruss, C. Macchiavello
We establish a connection between optimal quantum cloning and optimal state estimation for d-dimensional quantum systems. In this way we derive an upper limit on the fidelity of st…
Nucleon form factors in a chiral constituent-quark model
S. Boffi, P. Demetriou, M. Radici +1
The electromagnetic form factors of the nucleon have been calculated in a chiral constituent-quark model. The nucleon wave functions are obtained by solving a Schrödinger-type equa…
Light Pair Correction to Bhabha Scattering at Small Angle
G. Montagna, M. Moretti, O. Nicrosini +2
This work deals with the computation of electron pair correction to small angle Bhabha scattering, in order to contribute to the improvement of luminometry precision at LEP/SLC bel…
Six-fermion production and Higgs boson physics at future colliders
F. Gangemi, G. Montagna, M. Moretti +2
The six-fermion production processes , with all the lepton flavours and , relevant to the study of the intermediate-mass Higgs boson at…
Single- and multi-photon final states with missing energy at e+e- colliders
G. Montagna, M. Moretti, O. Nicrosini +1
The search for new physics in single- and multi-photon final states with large missing energy at LEP and future e^+ e^- colliders requires precise predictions for the Standard Mode…
Cantori and dynamical localization in the Bunimovich Stadium
Fausto Borgonovi, Paolo Conti, Daniela Rebuzzi +2
Classical and quantum properties of the Bunimovich stadium in the diffusive regime are reviewed. In particular, the quantum properties are directly investigated using an approximat…
\bar{p}p low energy parameters from annihilation cross section data
J. Carbonell, K. V. Protasov, A. Zenoni
The recent experimental data obtained by the OBELIX group on total annihilation cross section are analysed; the low energy spin averaged parameters of the sca…
Crumpled triangulations and critical points in 4D simplicial quantum gravity
J. Ambjorn, M. Carfora, D. Gabrielli +1
This is an expanded and revised version of our geometrical analysis of the strong coupling phase of 4D simplicial quantum gravity. The main differences with respect to the former v…
Rising Bosonic Electroweak Virtual Effects at High Energy e+e- Colliders
M. Beccaria, G. Montagna, F. Piccinini +2
The virtual massive gauge boson effects on several observables in the process of charged fermion pairs production at colliders are computed up to the TeV energy range in t…
Photon-induced two-nucleon knockout reactions to discrete final states
C. Giusti, F. D. Pacati
Cross sections and photon asymmetries of the exclusive 16O(γ,pn)14N and 16O(γ,pp)14C knockout reactions are calculated for transitions to the low-lying discrete final states of the…
TOPAZ0 4.0 - A new version of a computer program for evaluation of de-convoluted and realistic observables at LEP 1 and LEP 2
G. Montagna, O. Nicrosini, G. Passarino +1
The program TOPAZ0 was developed for computing a variety of physical observables which are related to the e+e- annihilation into fermion pairs and to the large angle Bhabha scatter…
MACHOs as brown dwarfs
F. De Paolis, G. Ingrosso, Ph. Jetzer +1
Recent observations of microlensing events in the Large Magellanic Cloud suggest that a sizable fraction of the galactic halo is in the form of Massive Astrophysical Compact Halo O…
Distributed Quantum Computation over Noisy Channels
J. I. Cirac, A. Ekert, S. F. Huelga +1
We analyse the use of entangled states to perform quantum computations non locally among distant nodes in a quantum network. The complexity associated with the generation of multip…
Nucleon generalized polarizabilities within a relativistic Constituent Quark Model
B. Pasquini, G. Salme`
Nucleon generalized polarizabilities are investigated within a relativistic framework, defining such quantities through a Lorentz covariant multipole expansion of the amplitude for…
Precision Physics at LEP
G. Montagna, O. Nicrosini, F. Piccinini
1 - Introduction 2 - Small-Angle Bhabha Scattering and the Luminosity Measurement 3 - Z^0 Physics 4 - Fits to Precision Data 5 - Physics at LEP2 6 - Conclusions
Semi-relativistic charge-current density operator
S. Boffi, F. Capuzzi, P. Demetriou +1
The charge-current density and two-photon operators consistent with a single-particle semi-relativistic Hamiltonian are derived within a suitable functional derivative formalism wh…
Quantum Binary Decision for Driven Harmonic Oscillator
Matteo G. A. Paris
We address the problem of determining whether or not a harmonic oscillator has been perturbed by an external force. Quantum detection and estimation theory has been used in devisin…
Noise, errors and information in quantum amplification
G. M. D'Ariano, C. Macchiavello, L. Maccone
We analyze and compare the characterization of a quantum device in terms of noise, transmitted bit-error-rate (BER) and mutual information, showing how the noise description is mea…
Localization in discontinuous quantum systems
Fausto Borgonovi
Classical and quantum properties of a discontinuous perturbed twist map are investigated. Different classical diffusive regimes, quasilinear and slow respectively, are observed. Th…
Binary brown dwarfs in the galactic halo?
F. De Paolis, G. Ingrosso, Ph. Jetzer +1
Microlensing events towards the Large Magellanic Cloud entail that a sizable fraction of dark matter is in the form of MACHOs (Massive Astrophysical Compact Halo Objects), presumab…
Halo dark clusters of brown dwarfs and molecular clouds
F. De Paolis, G. Ingrosso, Ph. Jetzer +1
The discovery of Massive Astrophysical Compact Halo Objects (MACHOs) in microlensing experiments makes it compelling to understand their physical nature, as well as their formation…