Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
- Centre National de la Recherche ScientifiqueFR2k papers
- University of British ColumbiaCA1.9k papers
- McGill UniversityCA1.9k papers
- University of VictoriaCA1.8k papers
- University of California, Santa CruzUS1.7k papers
- Rutherford Appleton LaboratoryGB1.7k papers
- University of ManchesterGB1.7k papers
- Queen Mary University of LondonGB1.7k papers
- University of PisaIT1.6k papers
- University of EdinburghGB1.6k papers
- University of BirminghamGB1.6k papers
- Heidelberg UniversityDE1.6k papers
51 papers · 1 filter
Yangians, finite W-algebras and the Non Linear Schrodinger hierarchy
M. Mintchev, E. Ragoucy, P. Sorba +1
We show an algebra morphism between Yangians and some finite W-algebras. This correspondence is nicely illustrated in the framework of the Non Linear Schrodinger hierarchy. For suc…
A massive object in the core of NGC 5055?
Sebastien Blais-Ouellette
In a global kinematical study of NGC 5055 using high resolution Fabry-Perot, intriguing spectral line profiles have been observed in the center of the galaxy. These profiles seem t…
Recent mathematical developments in the Skyrme model
T. Gisiger, M. B. Paranjape
In this review we present a pedagogical introduction to recent, more mathematical developments in the Skyrme model. Our aim is to render these advances accessible to mainstream nuc…
Symmetries of Discrete Dynamical Systems Involving Two Species
D. Gomez-Ullate, S. Lafortune, P. Winternitz
The Lie point symmetries of a coupled system of two nonlinear differential-difference equations are investigated. It is shown that in special cases the symmetry group can be infini…
A Measurement of the tau->electron Branching Ratio
The OPAL Collaboration, G. Abbiendi et al
The branching ratio for the decay tau->e nue nutau has been measured using Z0 decay data collected by the OPAL experiment at LEP. In total 33073 tau->e nue nutau candidates were id…
Solutions to the Optical Cascading Equations
S. Lafortune, P. Winternitz, C. R. Menyuk
Group theoretical methods are used to study the equations describing χ^{(2)}:χ^{(2)} cascading. The equations are shown not to be integrable by inverse scattering techniques. On th…
Quantum simulations of classical random walks and undirected graph connectivity
John Watrous
It is not currently known if quantum Turing machines can efficiently simulate probabilistic computations in the space-bounded case. In this paper we show that space-bounded quantum…
Perturbation of infra-red fixed points and duality in quantum impurity problems
F. Lesage, H. Saleur
We explain in this paper how a meaningful irrelevant perturbation theory around the infra-red (strong coupling) fixed point can be carried out for integrable quantum impurity probl…
Bilepton Production at Hadron Colliders
B. Dion, T. Gregoire, D. London +2
We examine, as model-independently as possible, the production of bileptons at hadron colliders. When a particular model is necessary or useful, we choose the 3-3-1 model. We consi…
Representations of the Weyl group and Wigner functions for SU(3)
D. J. Rowe, B. C. Sanders, H. de Guise
Bases for SU(3) irreps are constructed on a space of three-particle tensor products of two-dimensional harmonic oscillator wave functions. The Weyl group is represented as the symm…
Strong coupling resistivity in the Kondo model
F. Lesage, H. Saleur
By applying methods of integrable quantum field theory to the Kondo problem, we develop a systematic perturbation expansion near the IR (strong coupling) fixed point. This requires…
Necessity for High Accuracy Rotation Curves in Spiral Galaxies
Sebastien Blais-Ouellette, Claude Carignan, Philippe Amram
In the last 20 years, rotation curves derived from H I kinematics obtained on radio synthesis instruments were used to probe the dark matter distribution in spiral and dwarf irregu…
A nuclear grand-design spiral within the normal disc spiral of NGC 5248
S. Laine, J. H. Knapen, D. Pérez-Ramírez +2
We report the discovery of trailing grand-design nuclear spiral structure in the spiral galaxy NGC 5248. Two tightly-wound red spiral arms, with widths less than 1 arcsec (~75 pc),…
Particle Spaces on Manifolds and Generalized Poincaré Dualities
Sadok Kallel
It is quite an interesting phenomenon in Topology that configuration spaces on a manifold M are intrinsically related to certain mapping spaces from M. In this paper we interpret a…
Classical Trajectories for two Ring-Shaped Potentials
M. Kibler, G. -H. Lamot, P. Winternitz
This paper deals with the classical trajectories for two super-integrable systems: a system known in quantum chemistry as the Hartmann system and a system of potential use in quant…
The descriptive complexity approach to LOGCFL
Clemens Lautemann, Pierre McKenzie, Thomas Schwentick +1
Building upon the known generalized-quantifier-based first-order characterization of LOGCFL, we lay the groundwork for a deeper investigation. Specifically, we examine subclasses o…
Measurement of the Longitudinal Cross-Section using the Direction of the Thrust Axis in Hadronic Events at LEP
The OPAL Collaboration, G. Abbiendi et al
In the process e+e- to hadrons, one of the effects of gluon emission is to modify the 1+cos(theta)**2 form of the angular distribution of the thrust axis, an effect which may be qu…
First Measurement of Z/gamma* Production in Compton Scattering of Quasi-real Photons
OPAL Collaboration, G. Abbiendi et al
We report the first observation of Z/gamma* production in Compton scattering of quasi-real photons. This is a subprocess of the reaction e+e- to e+e-Z/gamma*, where one of the fina…
Production of Chi_c2 Mesons in Photon-Photon Collisions at LEP
The OPAL Collaboration, K. Ackerstaff et al
We present an observation at LEP of the production of chi_c2 mesons in the collisions of two quasi-real photons using the OPAL detector. The chi_c2 mesons are reconstructed in the…
The Effects of Finite Length on the Electronic Structure of Carbon Nanotubes
Alain Rochefort, Dennis R. Salahub, Phaedon Avouris
The electronic structure of finite-length armchair carbon nanotubes has been studied using several ab-initio and semi-empirical quantum computational techniques. The additional con…
Search for Higgs Bosons and New Particles Decaying into Two Photons at sqrt(s) = 183 GeV
The OPAL Collaboration, K. Ackerstaff et al
A search for the resonant production of high mass photon pairs associated with a leptonic or hadronic system has been performed using a data sample of 57.7 pb-1 collected at an ave…
Diffusion of Pt dimers on Pt(111)
Ghyslain Boisvert, Laurent J. Lewis
We report the results of a density-functional study of the diffusion of Pt dimers on the (111) surface of Pt. The calculated activation energy of 0.37 eV is in {\em exact} agreemen…
Multi-photon production in e+e- collisions at sqrt(s) = 183 GeV
The OPAL Collaboration, K. Ackerstaff et al
The process e+e- to gamma gamma (gamma) is studied using data recorded with the OPAL detector at LEP. The data sample corresponds to a total integrated luminosity of 56.2 pb-1 take…
Measurement of the Average Polarization of b Baryons in Hadronic Z^0 Decays
The OPAL Collaboration, G. Abbiendi et al
In the Standard Model, b quarks produced in e^+e^- annihilation at the Z^0 peak have a large average longitudinal polarization of -0.94. Some fraction of this polarization is expec…