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Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
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46 papers · 1 filter
Search for Right-Handed Bosons and Heavy in Collisions at 1.8 TeV
S. Abachi
We report on a search for right-handed bosons (). We used data collected with the DØ detector at the Fermilab Tevatron collider at 1.8 TeV to search f…
Holomorphy and dynamical scales in supersymmetric gauge theories
E. Dudas
New recent results in supersymmetric gauge theories based on holomorphy and symmetry considerations are extended to the case where the gauge coupling constant is given by the real…
A symplectic approach to gravitational instability
J. Perez, M. Lachieze-Rey
We present a global approach of non-dissipative physics. Based on symplectic mechanics this technique allows us to obtain the solution of a very large class of problems in terms of…
Stability of spherical stellar systems I : Analytical results
J. Perez, J-J Aly
The so-called ``symplectic method'' is used for studying the linear stability of a self-gravitating collisionless stellar system, in which the particles are also submitted to an ex…
Hard Exclusive Scattering in QCD
Thierry Gousset, Bernard Pire
We review the theory of hard exclusive scattering in Quantum Chromodynamics. After recalling the classical counting rules which describe the leading scale dependence of form factor…
Mode-Coupling Approximations, Glass Theory and Disordered Systems
Jean-Philippe Bouchaud, Leticia Cugliandolo, Jorge Kurchan +1
We discuss the general link between mode-coupling like equations (which serve as the basis of some recent theories of supercooled liquids) and the dynamical equations governing mea…
Two-point Functions and Quantum Fields in de Sitter Universe
J. Bros, U. Moschella
We present a theory of general two-point functions and of generalized free fields in d-dimensional de Sitter space-time which closely parallels the corresponding minkowskian theory…
From CFT's to Graphs
V. B. Petkova, J. -B. Zuber
In this paper, we pursue the discussion of the connections between rational conformal field theories (CFT) and graphs. We generalize our recent work on the relations of operator pr…
Stock market crashes, Precursors and Replicas
Didier Sornette, Anders Johansen, Jean-Philippe Bouchaud
We present an analysis of the time behavior of the (Standard and Poors) New York stock exchange index before and after the October 1987 market crash and identify precurso…
Approximate spectral functions in thermal field theory
P. A. Henning, E. Poliatchenko, T. Schilling +1
Causality requires, that the (anti-) commutator of two interacting field operators vanishes for space-like coordinate differences. This implies, that the Fourier transform of the s…
Soft scalar masses in supergravity with horizontal U(1)_X gauge symmetry
E. Dudas, S. Pokorski, C. A. Savoy
In supergravity with modular invariance and horizontal gauge symmetry there is a relation between modular weights and charges. The soft scalar masses are then str…
Jet Production via Strongly-Interacting Color-Singlet Exchange in Collisions
S. Abachi
A study of the particle multiplicity between jets with large rapidity separation has been performed using the DØdetector at the Fermilab Tevatron Collider operating at $…
Real-world options: smile and residual risk
Jean-Philippe Bouchaud, Giulia Iori, Didier Sornette
We present a theory of option pricing and hedging, designed to address non-perfect arbitrage, market friction and the presence of `fat' tails. An implied volatility `smile' is pred…
Studies of Topological Distributions of the Three- and Four-Jet Events in $\pp$ Collisions at GeV with the DØDetector
S. Abachi
The global topologies of inclusive three-- and four--jet events produced in $\pp$ interactions are described. The three-- and four--jet events are selected from data recorded by th…
An Effective Strong Gravity induced by QCD
V. Brindejonc, G. Cohen-Tannoudji
We show that, when quantized on a curved ``intra-hadronic background'', QCD induces an effective pseudo gravitational interaction with gravitational and cosmological constants in t…
Large time off-equilibrium dynamics of a manifold in a random potential
Leticia F. Cugliandolo, Jorge Kurchan, Pierre Le Doussal
We study the out of equilibrium dynamics of an elastic manifold in a random potential using mean-field theory. We find two asymptotic time regimes: (i) stationary dynamics, (ii) sl…
Graphs and Reflection Groups
Jean-Bernard Zuber
It is shown that graphs that generalize the ADE Dynkin diagrams and have appeared in various contexts of two-dimensional field theory may be regarded in a natural way as encoding t…
Baxter Equation for the QCD Odderon
Z. Maassarani, S. Wallon
The Hamiltonian derived by Bartels, Kwiecinski and Praszalowicz for the study of high-energy QCD in the generalized logarithmic approximation was found to correspond to the Hamilto…
Quantum interference and the spin orbit interaction in mesoscopic normal-superconducting junctions
Keith Slevin, Jean-Louis Pichard, P. A. Mello
We calculate the quantum correction to the classical conductance of a disordered mesoscopic normal-superconducting (NS) junction in which the electron spatial and spin degrees of f…
Non-perturbative aspects of screening phenomena in abelian and non abelian gauge theories
J. -P. Blaizot, E. Iancu
When computed to one-loop order in resummed perturbation theory, the non-abelian Debye mass appears to be logarithmically sensitive to the magnetic scale . More generally, we…
A mean-field hard-spheres model of glass
Leticia F. Cugliandolo, J. Kurchan, Remi Monasson +1
We present a model of spheres moving in a high-dimensional compact space. We relate it to a mixed matrix model with a invariant model plus a invariant perturbation. W…
ON A DYNAMICAL MODEL OF GLASSES
Jean-Philippe Bouchaud, Alain Comtet, Cécile Monthus
We analyze a simple dynamical model of glasses, based on the idea that each particle is trapped in a local potential well, which itself evolves due to hopping of neighbouring parti…
On the dynamics of a spherical spin-glass
L. F. Cugliandolo, D. S. Dean
We carry out an analysis of the effect of a quenched magnetic field on the dynamics of the spherical Sherrington-Kirkpatrick spin-glass model. We show that there is a characteristi…
A self-consistent theory of phase transitions in noncollinear magnets
Th. Jolicoeur
I study phase transitions occuring in noncollinear magnets by means of a self-consistent screening approximation. The Ginzburg-Landau theory involves two N-component vector fields…