396 citations
Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
- Centre National de la Recherche ScientifiqueFR154 papers
- Paris-Est SupFR126 papers
- École nationale des ponts et chausséesFR92 papers
- CERMICSFR71 papers
- Institut national de recherche en sciences et technologies du numériqueFR64 papers
- Laboratoire d'Informatique Gaspard-MongeFR46 papers
- Laboratoire d’Analyse et de Mathématiques AppliquéesFR44 papers
- Université Paris-Est CréteilFR40 papers
- Université Paris-Est Marne-la-ValléeFR39 papers
- Laboratoire NavierFR33 papers
- Laboratoire Modélisation et Simulation Multi-EchelleFR29 papers
- Université Paris DiderotFR15 papers
29 papers · 1 filter
Bi-stability resistant to fluctuations
Matthieu Caruel, Lev Truskinovsky
We study a simple micro-mechanical device that does not lose its snap-through behavior in an environment dominated by fluctuations. The main idea is to have several degrees of free…
Stable schemes for dissipative particle dynamics with conserved energy
Gabriel Stoltz
This article presents a new numerical scheme for the discretization of dissipative particle dynamics with conserved energy. The key idea is to reduce elementary pairwise stochastic…
Orbital breathing effects in the computation of x-ray d-ion spectra in solids by ab initio wave-function-based methods
Nikolay A. Bogdanov, Valentina Bisogni, Roberto Kraus +8
In existing theoretical approaches to core-level excitations of transition-metal ions in solids relaxation and polarization effects due to the inner core hole are often ignored or…
Efficient spectral computation of the stationary states of rotating Bose-Einstein condensates by the preconditioned nonlinear conjugate gradient method
Xavier Antoine, Antoine Levitt, Qinglin Tang
We propose a preconditioned nonlinear conjugate gradient method coupled with a spectral spatial dis-cretization scheme for computing the ground states (GS) of rotating Bose-Einstei…
Cluster dynamics modelling of materials: a new hybrid deterministic/stochastic coupling approach
Pierre Terrier, Manuel Athènes, Thomas Jourdan +2
Deterministic simulations of the rate equations governing cluster dynamics in materials are limited by the number of equations to integrate. Stochastic simulations are limited by t…
Discrete -robust -liftings and a posteriori estimates for elliptic problems with source terms
Alexandre Ern, Iain Smears, Martin Vohralík
We establish the existence of liftings into discrete subspaces of of piecewise polynomial data on locally refined simplicial partitions of polygonal/poly…
Estimating thermodynamic expectations and free energies in expanded ensemble simulations: systematic variance reduction through conditioning
Manuel Athènes, Pierre Terrier
Markov chain Monte Carlo methods are primarily used for sampling from a given probability distribution and estimating multi-dimensional integrals based on the information contained…
PALMA, an improved algorithm for DOSY signal processing
Afef Cherni, Emilie Chouzenoux, Marc-André Delsuc
NMR is a tool of choice for the measure of diffusion coefficients of species in solution. The DOSY experiment, a 2D implementation of this measure, has proven to be particularly us…
Diffusions under a local strong Hörmander condition. Part I: density estimates
Vlad Bally, Lucia Caramellino, Paolo Pigato
We study lower and upper bounds for the density of a diffusion process in in a small (but not asymptotic) time, say . We assume that the diffusion coefficients…
Distributed stochastic optimization via matrix exponential learning
Panayotis Mertikopoulos, E. Veronica Belmega, Romain Negrel +1
In this paper, we investigate a distributed learning scheme for a broad class of stochastic optimization problems and games that arise in signal processing and wireless communicati…
Massive scalar field on (A)dS space from a massless conformal field in
E. Huguet, J. Queva, J. Renaud
We show how the equations for the scalar field (including the massive, massless, minimally and conformally coupled cases) on de Sitter and Anti-de Sitter spaces can be obtained fro…
Analysis of Algorithms for Permutations Biased by Their Number of Records
Nicolas Auger, Mathilde Bouvel, Cyril Nicaud +1
The topic of the article is the parametric study of the complexity of algorithms on arrays of pairwise distinct integers. We introduce a model that takes into account the non-unifo…
Jump Markov models and transition state theory: the Quasi-Stationary Distribution approach
Giacomo Di Gesù, Tony Lelièvre, Dorian Le Peutrec +1
We are interested in the connection between a metastable continuous state space Markov process (satisfying e.g. the Langevin or overdamped Langevin equation) and a jump Markov proc…
Magnetic excitations and electronic interactions in SrCuTeO: a spin-1/2 square lattice Heisenberg antiferromagnet
P. Babkevich, Vamshi M. Katukuri, B. Fåk +9
SrCuTeO presents an opportunity for exploring low-dimensional magnetism on a square lattice of Cu ions. We employ ab initio multi-reference configuration int…
A minimal integrity basis for the elasticity tensor
Nicolas Auffray, Marc Olive, Boris Kolev
We definitively solve the old problem of finding a minimal integrity basis of polynomial invariants of the fourth-order elasticity tensor C. Decomposing C into its SO(3)-irreducibl…
Robust determination of maximally-localized Wannier functions
Éric Cancès, Antoine Levitt, Gianluca Panati +1
We propose an algorithm to determine Maximally Localized Wannier Functions (MLWFs). This algorithm, based on recent theoretical developments, does not require any physical input su…
A solution with free boundary for non-Newtonian fluids with Drucker-Prager plasticity criterion
Eleftherios Ntovoris, M Regis
We study a free boundary problem which is motivated by a particular case of the flow of a non-Newtonian fluid, with a pressure depending yield stress given by a Drucker-Prager plas…
Decomposing Cubic Graphs into Connected Subgraphs of Size Three
Laurent Bulteau, Guillaume Fertin, Anthony Labarre +2
Let be the set of connected graphs of size 3. We study the problem of partitioning the edge set of a graph into graphs taken from any non-empty $S'\subs…
Evolution of the free volume between rough surfaces in contact
M. Paggi, Q. -C. He
The free volume comprised between rough surfaces in contact governs the fluid/gas transport properties across networks of cracks and the leakage/percolation phenomena in seals. In…
Asymptotic normality and combinatorial aspects of the prefix exchange distance distribution
Simona Grusea, Anthony Labarre
The prefix exchange distance of a permutation is the minimum number of exchanges involving the leftmost element that sorts the permutation. We give new combinatorial proofs of know…
An accurate scheme to solve cluster dynamics equations using a Fokker-Planck approach
Thomas Jourdan, Gabriel Stoltz, Frédéric Legoll +1
We present a numerical method to accurately simulate particle size distributions within the formalism of rate equation cluster dynamics. This method is based on a discretization of…
Parallel image thinning through topological operators on shared memory parallel machines
Ramzi Mahmoudi, Mohamed Akil, Petr Matas
In this paper, we present a concurrent implementation of a powerful topological thinning operator. This operator is able to act directly over grayscale images without modifying the…
Data-driven probability concentration and sampling on manifold
Christian Soize, Roger Ghanem
A new methodology is proposed for generating realizations of a random vector with values in a finite-dimensional Euclidean space that are statistically consistent with a data set o…
On the expectation of operator norms of random matrices
Olivier Guédon, Aicke Hinrichs, Alexander E. Litvak +1
We prove estimates for the expected value of operator norms of Gaussian random matrices with independent and mean-zero entries, acting as operators from to $\ell_q^n…