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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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129 papers · 1 filter
The Hidden Geometry of the Quantum Euclidean Space
Gaetano Fiore, John Madore
We briefly describe how to introduce the basic notions of noncommutative differential geometry on the 3-dim quantum space covariant under the quantum group of rotations .
NMR imaging of the soliton lattice profile in the spin-Peierls compound CuGeO_3
M. Horvatic, Y. Fagot Revurat, C. Berthier +2
In the spin-Peierls compound CuGeO, the commensurate-incommensurate transition concerning the modulation of atomic position and the local spin-polarization is fully monitored…
Evaluation of and
Michel Davier
This talk summarizes the recent developments in the evaluation of the leading order hadronic contributions to the running of the QED fine structure constant , at $s=M_{\rm Z}…
AgapeZ1: a Large Amplification Microlensing Event or an Odd Variable Star Towards the Inner Bulge of M31
R. Ansari, M. Auriere, P. Baillon +14
AgapeZ1 is the brightest and the shortest duration microlensing candidate event found in the Agape data. It occured only 42" from the center of M31. Our photometry shows that the h…
Universality of the Wigner time delay distribution for one-dimensional random potentials
Christophe Texier, Alain Comtet
We show that the distribution of the time delay for one-dimensional random potentials is universal in the high energy or weak disorder limit. Our analytical results are in excellen…
Random Walkers in 1-D Random Environments: Exact Renormalization Group Analysis
Daniel S. Fisher, Pierre Le Doussal, Cecile Monthus
Sinai's model of diffusion in one-dimension with random local bias is studied by a real space renormalization group which yields exact results at long times. The effects of an addi…
Simplicite de groupes d'automorphismes d'espaces a courbure negative
Frederic Haglund, Frederic Paulin
We prove that numerous negatively curved simply connected locally compact polyhedral complexes, admitting a discrete cocompact group of automorphisms, have automorphism groups whic…
Partial breaking of supersymmetry, open strings and M-theory
I. Antoniadis, G. D'Appollonio, E. Dudas +1
We study total and partial supersymmetry breaking by freely acting orbifolds, or equivalently by Scherk-Schwarz compactifications, in type I string theory. In particular, we descri…
The Pinch Technique Beyond One Loop: The Gauge-Independent Two-Loop Quark Self-Energy
N. J. Watson
It is shown how the pinch technique algorithm may be consistently extended beyond the one-loop level to obtain the gauge-independent two-loop fermion self-energy -i\hatΣ^(2)(p) in…
Ising Spin Glasses in a Magnetic Field
J. Houdayer, O. C. Martin
Ground states of the three dimensional Edwards-Anderson spin glass are computed in the presence of an external magnetic field. Our algorithm is sufficiently powerful for us to trea…
Conductance and Shot Noise for Particles with Exclusion Statistics
Serguei B. Isakov, Thierry Martin, Stéphane Ouvry
The first quantized Landauer approach to conductance and noise is generalized to particles obeying exclusion statistics. We derive an explicit formula for the crossover between the…
Discovery of distant high luminosity infrared galaxies
Paul P. van der Werf, D. L. Clements, P. A. Shaver +1
We have developed a method for selecting the most luminous galaxies detected by IRAS based on their extreme values of R, the ratio of 60 micron and B-band luminosity. These objects…
Search for the Standard Model Higgs boson at the LEP2 collider near sqrt(S) = 183GeV
ALEPH Collaboration
During 1997 the ALEPH experiment at LEP gathered 57pb^-1 of data at centre-of- mass energies near 183 GeV. These data are used to look for possible signals from the production of t…
A critical phenomenological study of inclusive photon production in hadronic collisions
P. Aurenche, M. Fontannaz, J. Ph. Guillet +3
We discuss fixed target and ISR inclusive photon production and attempt a comparison between theory and experiments. The dependence of the theoretical predictions on the structure…
Study of D0-Dbar0 mixing and D0 doubly cabibbo-suppressed decays
ALEPH collaboration
Using a sample of four million hadronic Z events collected in ALEPH from 1991 to 1995, the decays D*+ -> D0pi^+_s, with D0 decaying to K-pi+ or to K+pi-, are studied. The relative…
Diagonal charge stripes giving a suppression of spectral weight at selected spots on the Fermi surface
N. L. Saini, A. Bianconi, A. Lanzara +5
Here we report an asymmetric suppresion of spectral weight at the Fermi surface around the M points using angle resolved photoemission spectroscopy. The results provide direct evid…
Non-perturbatively Improved Heavy-Light Mesons: Masses and Decay Constants
D. Becirevic, Ph. Boucaud, J. P. Leroy +4
We present a study of the heavy-light spectrum and of the D- and B-meson decay constants. The results wer e obtained in the quenched approximation, by using the non-perturbatively…
Resonant continuum in the Hartree-Fock+BCS approximation
N. Sandulescu, Nguyen Van Giai, R. J. Liotta
A method for incorporating the effect of the resonant continuum into Hartree-Fock+BCS equations is proposed. The method is applied for the case of a neutron-rich nucleus calculated…
An ultra-deep ISOCAM observation through a cluster-lens
B. Altieri, L. Metcalfe, J. P. Kneib +10
We present results of ultra-deep ISOCAM observations through a cluster-lens at 7 and 15 micron with the Infrared Space Observatory (ISO) satellite. These observations reveal a larg…
Destriping Polarised data
B. Revenu, F. Couchot, J. Delabrouille +1
We show how to take advantage of a circle scanning strategy, such as that planned for the Planck mission, to get rid of low frequency noises for polarised data.
Negative Josephson coupling in the Kondo strong coupling limit
Oron Zachar
We Show that pair hopping through a Kondo singlet give rise to a negative Josephson coupling. Thus, our calculation supports the existance of staggered pair correlations in the str…
Dislocations and Bragg glasses in two dimensions
Pierre Le Doussal, Thierry Giamarchi
We discuss the question of the generation of topological defects (dislocations) by quenched disorder in two dimensional periodic systems. In a previous study [Phys. Rev. B {\bf 52}…
Many-body spectral statistics of interacting Fermions
M. Pascaud, G. Montambaux
We have studied the appearance of chaos in the many-body spectrum of interacting Fermions. The coupling of a single state to the Fermi sea is considered. This state is coupled to a…
Study of the ABC Enhancement in the d d -> alpha X reaction
R. Wurzinger, O. Bing, M. Boivin +13
The polarized d d -> alpha X reaction at beam energies close to the eta threshold shows very strong structure in the missing mass corresponding to the ABC enhancement. The deuteron…