CEA Paris-Saclay

output

19912026

researchers with a paper here

Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.

collaborating institutions

Showing 1996Show all

58 papers · 1 filter

nucl-th1996★ 136 cited

Deformation of Nuclei Close to the Two-Neutron Drip Line in Mg Region

J. Terasaki, H. Flocard, P. -H. Heenen +1

We perform the Hartree-Fock-Bogoliubov (HFB) calculations for ground states of even Mg isotopes using the Skyrme force and a density-dependent zero-range pairing force. The HFB equ…

hep-ex1996★ 14 cited

Search for Top Squark Pair Production in the Dielectron Channel

D0 Collaboration, S. Abachi

This report describes the first search for top squark pair production in the channel stop_1 stopbar_1 -> b bbar chargino_1 chargino_1 -> ee+jets+MEt using 74.9 +- 8.9 pb^-1 of data…

cond-mat.supr-con1996★ 37 cited

Nodes of the superconducting gap probed by electronic Raman scattering in HgBa_{2}CaCu_{2}O_{6+δ} single crystals

A. Sacuto, R. Combescot, N. Bontemps +3

Pure electronic Raman spectra with no phonon structures superimposed to the electronic continuum, are reported, in optimally doped HgBa_{2}CaCu_{2}O_{6+δ} single crystals (T_{c }=1…

hep-ex1996★ 50 cited

Limits on Anomalous $W W γ$ Couplings from $p p ˉ \to W γ + X$ Events at $s = 1.8$ TeV

The DZero Collaboration, S. Abachi

We have measured the $W W γ$ gauge boson coupling parameters using $p p ˉ \to ℓ ν γ + X$ ( $ℓ = e, μ$ ) events at $s = 1.8$ TeV. The data, corresponding to an integrated luminosi…

cond-mat.stat-mech1996★ 19 cited

Frustrated Blume-Emery-Griffiths model

G. R. Schreiber

A generalised integer S Ising spin glass model is analysed using the replica formalism. The bilinear couplings are assumed to have a Gaussian distribution with ferromagnetic mean <…

cond-mat1996★ 51 cited

Multiple Rayleigh scattering of electromagnetic waves

E. Amic, J. M. Luck, Th. M. Nieuwenhuizen

Multiple scattering of polarised electromagnetic waves in diffusive media is investigated by means of radiative transfer theory. The method becomes exact in several situations of i…

hep-th1996★ 27 cited

Two-Dimensional Chiral Matrix Models and String Theories

Ivan K. Kostov, Matthias Staudacher

We formulate and solve a class of two-dimensional matrix gauge models describing ensembles of non-folding surfaces covering an oriented, discretized, two-dimensional manifold. We i…

cond-mat.stat-mech1996★ 12 cited

Geometrical Folding Transitions of the Triangular Lattice in the Face-Centred Cubic Lattice

Mark Bowick, Olivier Golinelli, Emmanuel Guitter +1

We study the folding of the regular two-dimensional triangular lattice embedded in the regular three-dimensional Face-Centred Cubic lattice, a discrete model for the crumpling of m…

cond-mat.str-el1996★ 1 cited

An investigation of the 2D attractive Hubbard model

R. Lacaze, A. Morel, B. Petersson +1

We present an investigation of the 2D attractive Hubbard model, considered as an effective model relevant to superconductivity in strongly interacting electron systems. We use both…

cond-mat1996★ 37 cited

Symmetry of the superconducting gap in $H g B a_{2} C a C u_{2} O_{6 + δ}$ single crystals from electronic Raman scattering

A. Sacuto, N. Bontemps, P. Monod +3

Pure electronic Raman spectra with no phonon structures superimposed to the electronic continuum, are reported for the first time, in optimally doped $H g B a_{2} C a C u_{2} O_{6 + δ}$ sin…

cond-mat.soft1996

Dynamics of the swelling or collapse of a homopolymer

E. Pitard, H. Orland

We study the dynamics of a polymer when it is quenched from a $θ$ solvent into a good or bad solvent by means of a Langevin equation. The variation of the radius of gyration is stu…

solv-int1996★ 30 cited

A new method to test discrete Painlevé equations

R. Conte, M. Musette

Necessary discretization rules to preserve the Painlevé property are stated. A new method is added to the discrete Painlevé test, which perturbs the continuous limit and generates…

hep-th1996★ 48 cited

A scenario for the c>1 barrier in non-critical bosonic strings

Francois David

The c<1 and c>1 matrix models are analyzed within large N renormalization group, taking into account touching (or branching) interactions. The c<1 modified matrix model with string…

cond-mat1996★ 13 cited

A new experimental procedure for characterizing quantum effects in small magnetic particle systems

R. Sappey, E. Vincent, M. Ocio +4

A new experimental procedure is discussed, which aims at separating thermal from quantum behavior independently of the energy barrier distribution in small particle systems. Magnet…

nucl-th1996★ 19 cited

Triplet np Final State Interactions at Large Momentum Transfers

A. Boudard, G. Faeldt, C. Wilkin

Using the simple relation between the np scattering and bound state wave functions, the spin-triplet contributions to the pp -> pi+ (pn) and backward dp -> p(pn) reactions are esti…

astro-ph1996★ 24 cited

ASCA observations of the galactic bulge hard x-ray source GRS 1758--258

S. Mereghetti, D. I. Cremonesi, F. Haardt +3

GRS 1758-258 is one of the few persistent hard X-ray emitters (E>100 keV) in the Galaxy. Using the ASCA satellite, we have obtained the first detailed data on GRS 1758-258 in the 1…

chao-dyn1996★ 44 cited

Eigenstate structures around a hyperbolic point

S. Nonnenmacher, A. Voros

Using coherent-state representations of quantum mechanics (Bargmann, Husimi, and stellar representations), we describe analytically the phase-space structure of the general eigenst…

cond-mat1996★ 83 cited

Static avalanches and Giant stress fluctuations in Silos

P. Claudin, J. -P. Bouchaud

We propose a simple model for arch formation in silos. We show that small pertubations (such as the thermal expansion of the beads) may lead to giant stress fluctuations on the bot…

cond-mat1996

Anomalies in the Relaxation of Small Magnetic Particles at Very Low Temperatures

R. Sappey, E. Vincent, J. Hammann +3

The magnetization relaxation rate of small gamma-Fe2O3 particles dispersed in a silica matrix has been measured from 60 mK to 5 K. It shows a minimum around 150 mK, that can be dis…

hep-ph1996

Lifetime of quasiparticles in hot gauge theories

Edmond Iancu, Service de Physique Theorique, Saclay +1

The perturbative calculation of the lifetime of charged excitations in ultrarelativistic plasmas is plagued with infrared divergences which are not eliminated by the screening corr…

cond-mat1996★ 1 cited

Financial markets as adaptative ecosystems

Marc Potters, Rama Cont, Jean-Philippe Bouchaud

We show, by studying in detail the market prices of options on liquid markets, that the market has empirically corrected the simple, but inadequate Black-Scholes formula to account…

cond-mat1996★ 8 cited

Self Consistent Screening Approximation For Critical Dynamics

Matteo Campellone, Jean-Philippe Bouchaud

We generalise Bray's self-consistent screening approximation to describe the critical dynamics of the $ϕ^{4}$ theory. In order to obtain the dynamical exponent $z$ , we have to make a…

solv-int1996

Discrete version of the Chazy class III equation

Simon Labrunie, Robert Conte

We study the discretisation of the Chazy class III equation by two means: a discrete Painlevé test, and the preservation of a two-parameter solution to the continuous equation. We…

solv-int1996★ 9 cited

A geometrical method towards first integrals for dynamical systems