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"Usages du livret de ballet en danse baroque contemporaine. A propos de Don Juan, et les Petits Riens, de la compagnie L'Eventail"
No full textInternational audienc
Los invertidos. Verdad, justicia y reparación para gais y transexuales durante la dictadura franquista
No full textInternational audienc
Le Vexin français antique (Archéologie en région Île-de-France, n°1)
No full textBrochure de présentation des recherches archéologiques menées dans le Vexin françai
Attosecond photoionization dynamics in the vicinity of the Cooper minima in argon
No full textLetter - Open AccessInternational audienceUsing a spectrally resolved electron interferometry technique, we measure photoionization time delays between the 3s and 3p subshells of argon over a large 34-eV energy range covering the Cooper minima in both subshells. The observed strong variations of the 3s − 3p delay difference, including a sign change, are well reproduced by theoretical calculations using the two-photon two-color random-phase approximation with exchange. Strong shake-up channels lead to photoelectrons spectrally overlapping with those emitted from the 3s subshell. These channels need to be included in our analysis to reproduce the experimental data. Our measurements provide a benchmark for multielectronic theoretical models aiming at an accurate description of interchannel correlation
SPARSE LINEAR PRECODERS FOR MITIGATING NONLINEARITIES IN MASSIVE MIMO
No full textInternational audienceDealing with nonlinear effects of the radio-frequency (RF) chain is a key issue in the realization of very large-scale multi-antenna (MIMO) systems. Achieving the remarkable gains possible with massive MIMO requires that the signal processing algorithms systematically take into account these effects. Here, we present a computationally-efficient linear precoding method satisfying the requirements for low peak-to-average power ratio (PAPR) and low-resolution D/Aconverters (DACs). The method is based on a sparse regularization of the precoding matrix and offers advantages in terms of precoded signal PAPR as well as processing complexity. Through simulation, we find that the method substantially improves conventional linear precoders
One-dimensional Monte Carlo dynamics at zero temperature
No full textJ. Phys. A: Math. Theor (2021)We investigate, both analytically and with numerical simulations, a Monte Carlo dynamics at zero temperature, where a random walker evolving in continuous space and discrete time seeks to minimize its potential energy, by decreasing this quantity at each jump. The resulting dynamics is universal in the sense that it does not depend on the underlying potential energy landscape, as long as it admits a unique minimum; furthermore, the long time regime does not depend on the details of the jump distribution, but only on its behaviour for small jumps. We work out the scaling properties of this dynamics, as embodied by the walker probability density. Our analytical predictions are in excellent agreement with direct Monte Carlo simulations
