Research-Talks

Invited talks

August 2024: Bielefeld Stochastic processes under constraints
Approximating metastable continuous-space Markov chains by Markov chains on a finite set
July 2024: Wuhan, Great Bay University and Huazhong University of Science and Technology Stochastic analysis seminar (Online)
Stochastic resonance in stochastic PDEs
May 2024: Nancy, Séminaire du LPCT
Une approche algébrique à la renormalisation perturbative du modèle Φ⁴
May 2024: Nancy, Decorated tree-like structures for singular dynamics
Perturbative renormalisation of the Φ⁴_d model viewed as generalized Wick renormalisation

November 2023: Lausanne, Stochastic analysis seminar
A working seminar on stochastic resonance in stochastic PDEs
October 2023: Gjøvik, Rough paths, Quantum field theory, and Renormalization
Perturbation theory for the Φ⁴₃ model, revisited with Hopf algebras
July 2023: Seoul, Online probability seminar
Metastable dynamics of one-dimensional Allen—Cahn-type equations
Renormalisation and metastable dynamics of the two-dimensional Allen—Cahn equation
July 2023: ZiF, Bielefeld, SPDEs, optimal control and mean field games – analysis, numerics and applications
Stochastic resonance in stochastic PDEs
June 2023: IECN, Nancy, Hopf algebras, operads, deformations for singular dynamics
Perturbation theory for the Φ⁴₃ measure, revisited with Hopf algebras
June 2023: École Polytechnique, Paris, Journée thématique autour de la renormalisation
Renormalisation of static and dynamic Φ⁴_d models
June 2023: Institute of Applied and Computational Mathematics, FORTH, in Heraklion, Crete, Stochastic Differential Equations: Analysis and Modelling
Stochastic resonance in stochastic PDEs
April 2023: CIRM, Marseille, Analysis and simulations of metastable systems
Approximating metastable continuous-space Markov chains by Markov chains on a finite set
March 2023: Université de Pau, 35e congrès MATh.en.JEANS
Combien de lampes pour éclairer un labyrinthe de miroirs ?
February 2023: Universität Konstanz, Mathematisches Kolloquium
Stochastic resonance: From stochastic ODEs to stochastic PDEs

December 2022: Online, One World Dynamics Seminar
Noise-induced transitions between limit cycles
December 2022: ENS Paris, Séminaire "Des Mathématiques" de l'ENS
Quelques histoires d'équations de réaction-diffusion, sans bruit et avec bruit
November–December 2022: Banff, Topics in Multiple Time Scale Dynamics
Stochastic resonance in stochastic PDEs
November 2022: Université Lyon 1, Séminaire Physique mathématique de l'ICJ
Perturbation theory for the Φ⁴₃ measure, revisited with Hopf algebras
October 2022: Berlin, Berlin Probability Colloquium
Stochastic resonance in stochastic PDEs
June 2022: Hanoi, 7th International Conference on Random Dynamical Systems (Online)
Stochastic resonance in stochastic PDEs
April 2022: Drexel University, Mathematics Colloquium (Online)
Metastability of stochastic partial differential equations and Fredholm determinants
April 2022: Institut Henri Poincaré, Séminaire Problèmes Spectraux en Physique Mathématique
An Eyring-Kramers law for slowly oscillating bistable diffusions
March 2022: ENS Lyon, Groupe de travail "MathsInFluids"
Modèles stochastiques et dynamique du climat

December 2021: Bielefeld, IRTG winter school - Stochastic Dynamics (Online)
Metastable dynamics of Markov processes
Science outreach with a YouTube channel: a personal experience
November 2021: Erwin Schrödinger Intitute (ESI), Vienna, Higher Structures Emerging from Renormalisation
Discussion of "Singular kinetic equations and applications" by Rongchan Zhu Video
September 2021: University of Campinas (UNICAMP), Brazil, Seminar in stochastic analysis (Online)
Stochastic resonance in stochastic PDEs
March 2021: NTNU Trondheim, DNA Seminar (Online)
Metastable dynamics of stochastic Allen-Cahn PDEs on the torus
March 2021: CIRM, Marseille, Stochastic Pathwise Analysis and their Applications (Online)
Renormalisation when approaching the subcriticality threshold: A simple example
January 2021: Brandeis University, Brandeis Mathematical Biology seminar (Online)
Theory and applications of random Poincaré maps — Video

October 2020: Imperial College London, DynamIC Seminar (Online)
Precise estimates on noise-induced transitions in oscillating double-well potentials — Video
October 2020: Nantes, ANR QuAMProcs Workshop
An Eyring–Kramers law for periodically forced bistable systems
August 2020: Web conference Bernoulli-IMS One World Symposium 2020
Session on Stochastic processes
An Eyring-Kramers law for periodically forced bistable systems — Prerecorded online talk
April 2020: Lille, Séminaire Analyse Numérique — Equations aux Dérivées Partielles
Convergence vers l'équilibre dans des EDPs stochastiques paraboliques singulières (Online)
March 2020: Munich, SIAM Conference on Uncertainty Quantification. Conference Cancelled
On Periodically Forced Stochastic Systems
March 2020: Orsay, ANR QuAMProcs Workshop. Postponed
An Eyring–Kramers law for periodically forced bistable systems
February 2020: Oxford, Stochastic Analysis & Mathematical Finance Seminars
Sharp estimates for metastable transition times in Allen-Cahn SPDEs on the torus

December 2019: Blois, Fenêtre sur Sciences
Les mathématiques à la rescousse de la physique quantique — et inversement
November 2019: Gif-sur-Yvette, Long-Time Behaviour and Statistical Inference for Stochastic Processes: from Markovian to Long-Memory Dynamics
Convergence to equilibrium in some singular parabolic SPDEs
October 2019: Bonn, Singular SPDEs and Related Topics
BPHZ renormalisation and vanishing subcriticality limit of the fractional Φ³_d model — Video
October 2019: Nancy, Première conférence du GdR TRAG
Introduction à la renormalisation BPHZ
July 2019: Leiden, Equadiff 2019
Trace process and metastability
June 2019: Orléans, Scaling Limits and Large Deviations
Convergence to equilibrium in some singular parabolic SPDEs
April 2019: CIRM, Marseille, Random Partial Differential Equations
Convergence to equilibrium in some singular parabolic SPDEs
February 2019: Edinburgh, North British Probability Seminar
Sharp estimates for metastable transition times in Allen-Cahn SPDEs on the torus
January 2019: Sarajevo, Sarajevo Stochastic Analysis Winter School 2019
An introduction to Singular Stochastic PDEs

November 2018: Stochastics Meeting Lunteren
Trace process and metastability
Metastable dynamics of stochastic PDEs
September 2018: CIRM, Marseille, Advances in Computational Statistical Physics
Trace process and metastability
July 2018: Bielefeld, Bielefeld Stochastic Afternoon
Metastable Markov chains, trace process and spectral theory
July 2018: FU and WIAS Berlin, Oberseminar Nonlinear Dynamics
Metastable dynamics of Allen-Cahn SPDEs on the torus
July 2018: TU Berlin, Symposium of the Collaborative Research Center 910
Theory and applications of random Poincaré maps
June 2018: Centre Henri Lebesgue, Rennes, Simulation and probability: recent trends
Metastable Markov chains, trace process and spectral theory
January 2018: Imperial College London, Applied PDEs Seminar
Sharp estimates for metastable transition times in Allen-Cahn SPDEs on the torus

December 2017: Lyon, Séminaire de Probabilités commun ICJ/UMPA
Une approche "mécanique statistique" aux structures de régularité près du seuil de sous-criticalité
December 2017: Lorentz Center, Leiden, Random Dynamical Systems
Theory and applications of random Poincaré maps
November 2017: Warwick, Statistical Mechanics Seminar
Metastability in stochastic Allen-Cahn PDEs
July 2017: Moscow, 39th Conference on Stochastic Processes and their Applications
A "thermodynamic" characterization of some regularity structures near the subcriticality threshold
Metastability for interacting particles in double-well potentials and Allen-Cahn SPDEs
June 2017: Bielefeld, 9th Workshop on Random Dynamical Systems
Metastability in stochastic Allen-Cahn PDEs
May 2017: Paris, Séminaire du LPMA
Une approche "mécanique statistique" aux structures de régularité près du seuil de sous-criticalité
May 2017: IHP, Paris, Stochastic Dynamics Out of Equilibrium, General Seminar
Metastability in stochastic PDEs
March 2017: TU Wien, DK Seminar
Metastability of stochastic Allen-Cahn equations on the torus
January 2017: Warwick, Statistical Mechanics Seminar
A "thermodynamic" characterisation of some regularity structures near the subcriticality threshold

October 2016: Utrecht, Marc Kac Seminar
Metastable dynamics of Allen-Cahn equations
June 2016: École des Ponts ParisTech, Séminaire du CERMICS
Regularity structures and renormalisation of FitzHugh-Nagumo SPDEs in three space dimensions
May 2016: Le Mans, Journées de Probabilités 2016
EDPs stochastiques et métastabilité
May 2016: Augsburg, Mathematisches Kolloquium
Sharp asymptotics for metastable transition times in one- and two-dimensional Allen–Cahn SPDEs
April 2016: Eurandom, Eindhoven, Workshop on Metastability
Metastability of stochastic Allen–Cahn PDEs
April 2016: EPF Lausanne, Séminaire de Probabilités
Regularity structures and renormalisation of FitzHugh-Nagumo SPDEs in three space dimensions
April 2016: EPF Lausanne, SIAM Conference on Uncertainty Quantification
Theory and Applications of Random Poincaré Maps
February 2016: Paris, COSMOS Workshop
Sharp estimates on metastable lifetimes for one- and two-dimensional Allen–Cahn SPDEs

December 2015: Darmstadt, Oberseminar Stochastik
Synchronisation, noise-induced phase slips and the Gumbel distribution
December 2015: Warwick, Probability seminar
An Eyring–Kramers formula for one-dimensional parabolic SPDEs with space-time white noise
November 2015: Strasbourg, Séminaire de Calcul stochastique
Structures de régularité et renormalisation d'EDPS de FitzHugh–Nagumo
November 2015: Bielefeld, 8th Workshop on random dynamical systems
Regularity structures and renormalisation of FitzHugh-Nagumo SPDEs in three space dimensions — Video
July 2015: Lyon, Equadiff 2015
On FitzHugh-Nagumo SDEs and SPDEs
June 2015: Lyon, Statistical mechanics and computation of large deviation rate functions
Metastability in systems of coupled multistable SDEs — Video
June 2015: Tours, Séminaire tournant de probabilités et statistiques
Théorie des valeurs extrêmes et problème de sortie stochastique
March 2015: Le Havre, Séminaire du LMAH
Phénomènes induits par le bruit dans les systèmes dynamiques lents–rapides
March 2015: Paris, Institut des Systèmes Complexes
A toolbox to quantify effects of noise on slow-fast dynamical systems
March 2015: LMA Poitiers, Séminaire de probabilités, statistique et applications
Distribution de spikes pour des modèles stochastiques de neurones et chaînes de Markov à espace continu
March 2015: TU Wien, Institute for Analysis und Scientific Computing
An Eyring-Kramers formula for parabolic SPDEs with space-time white noise

December 2014: Bielefeld, 7th Workshop on random dynamical systems
Extreme-value theory and the stochastic exit problem
December 2014: LMPT Tours, Séminaire de Probabilité et Théorie Ergodique
Distribution de spikes pour des modèles stochastiques de neurones et chaînes de Markov à espace continu
November 2014: Lausanne, Multi-scale models, slow-fast differential equations, averaging in ecology
Noise-induced transitions in slow–fast dynamical systems
July 2014: Buenos Aires, 37th Conference on Stochastic Processes and their Applications
Some rigorous results on interspike interval distributions in stochastic neuron models
July 2014: Madrid, 10th AIMS Conference on Dynamical Systems, Differential Equations and Applications
A group-theoretic approach to metastability in networks of interacting SDEs
Synchronization and noise-induced phase slips
April 2014: Ruhr-Universität Bochum
Synchronization, noise-induced phase slips and extreme-value theory
March 2014: Séminaire de probabilités et mathématiques financières, Évry
Problème de sortie stochastique à travers une orbite instable
January 2014: Institut Henri Poincaré, Paris, Inhomogeneous Random Systems
Noise-induced phase slips, log-periodic oscillations and the Gumbel distribution — Videos

December 2013: IRMAR, Université de Rennes, Séminaire de Probabilités
Chaînes de Markov à espace continu, distributions quasi-stationnaires, et diffusions irréversibles
October-November 2013: Bielefeld, 6th Workshop on random dynamical systems
From random Poincaré maps to stochastic mixed-mode-oscillation patterns
June 2013: CRM, Barcelona, Workshop on Slow-Fast Dynamics: Theory, Numerics, Application to Life and Earth Sciences
Random Poincaré maps and noise-induced mixed-mode-oscillation patterns
February 2013: Lille, 5ème Rencontre du GDR Dynamique Quantique
Irreversible diffusions and non-selfadjoint operators: Results and open problems
February 2013: Rhein-Main Kolloquium Stochastik, Gutenberg-Universität Mainz
Quantifying neuronal spiking patterns using continuous-space Markov chains

November 2012: Heriot-Watt University, Edinburgh
Quantifying the effect of noise on neuronal spiking patterns
October 2012: Bielefeld, 5th Workshop on Random Dynamical Systems
Some applications of quasistationary distributions to random Poincaré maps
July 2012: Paris, Random models in neuroscience
Some results on interspike interval statistics in conductance-based models for neuron action potentials
March 2012: Imperial College London, Critical Transitions in Complex Systems
Sample-path behaviour of noisy systems near critical transitions
February 2012: Institut de Mathématiques de Toulouse
Oscillations multimodales et chasse aux canards stochastiques

December 2011: Warwick Mathematics Institute, Multiscale Systems: Theory and Applications
Canards, mixed-mode oscillations and interspike distributions in stochastic systems
November 2011: ZiF, Bielefeld, Stochastic Dynamics in Mathematics, Physics and Engineering
Does noise create or suppress mixed-mode oscillations?
August 2011: Mathematisches Forschungszentrum Oberwolfach, Dynamics of Stochastic Systems and their Approximation
Stochastic dynamical systems in neuroscience
July 2011: Vancouver, ICIAM 2011
On the Interspike Time Statistics in the Stochastic FitzHugh-Nagumo Equation
May 2011: Groupe de travail Modélisation, LPMA, Paris 6
Oscillations multimodales dans les équations différentielles stochastiques
March 2011: Groupe de travail Neuromathématiques et modèles de perception, IHP, Paris
Geometric singular perturbation theory for stochastic differential equations with applications to neuroscience
March 2011: Groupe de travail Mathématiques et neurosciences, IHP, Paris
Chasse aux canards en environnement bruité
February 2011: Laboratoire Dieudonné, Nice
Chasse aux canards en environnement bruité
January 2011: Institut Henri Poincaré, Paris, Inhomogeneous Random Systems
The Kramers law: Validity, derivations and generalizations
January 2011: Institut du Fer à Moulin, Paris
Quantifying the effect of noise on oscillatory patterns

November-December 2010: Grenoble, Open quantum systems
Metastability in a class of parabolic SPDEs
November 2010: Séminaire de probabilités, EPF Lausanne
Metastability in a class of parabolic SPDEs
June 2010: IGK-Seminar, Bielefeld
Stochastic differential equations in neuroscience
April 2010: Groupe de travail systèmes dynamiques, LJLL, Paris 6
Systèmes lents–rapides perturbés par un bruit — Applications dans les neurosciences

November 2009: Bielefeld, 3rd Workshop on Random Dynamical Systems
Metastability for Ginzburg-Landau-type SPDEs with space-time white noise
June 2009: Journée en l'honneur d'Hervé Kunz, EPF Lausanne
Métastabilité dans des équations de Ginzburg–Landau avec bruit blanc spatiotemporel
May 2009: CRM, Barcelona, Deterministic and Stochastic Modeling in Computational Neuroscience and Other Biological Topics
Stochastic models for excitable systems
March 2009: Institut Fourier, Grenoble, Journées Systèmes Ouverts
Metastability for the Ginzburg-Landau equation with space-time noise

November 2008: Groupe de Travail Modélisation de l'Evolution du Vivant, Ecole Polytechnique, Paris/Palaiseau
Equations différentielles stochastiques lentes–rapides
November 2008: Bielefeld, Workshop on Random Dynamical Systems
Metastability in systems with bifurcations
October 2008: Theoretical Physics Seminar, KU Leuven
Kramers rate theory at bifurcations
June 2008: Séminaire de physique mathématique, Lille
L'effet d'un bruit classique sur un système quantique à deux niveaux
June 2008: Nice, Applications of spatio-temporal dynamical systems in biology
Metastability in a system of interacting nonlinear diffusions
May 2008: Séminaire de probabilités, Paris 6 & 7
Métastabilité dans un système de diffusions couplées
March 2008: Séminaire de probabilités Nord-Ouest, Angers
Métastabilité dans un système de diffusions couplées

November-December 2007: Bielefeld, Workshop on Random Dynamical Systems
Metastable lifetimes and optimal transition paths in noisy spatially extended systems
June 2007: Seminar on Stochastic Analysis, University of Warwick
Metastability in a chain of coupled nonlinear diffusions
April 2007: Berliner Kolloquium Wahrscheinlichkeitstheorie, WIAS Berlin
Metastability in a chain of coupled nonlinear diffusions
April 2007: Séminaire de Probabilités, Université Rennes 1
Metastabilité dans un système de diffusions non-linéaires couplées
February 2007: University of Sussex, Macsdiem07
Noise-induced phenomena in slow-fast dynamical systems
January 2007: Oberseminar Math. Statistik & Wahrscheinlichkeitstheorie, Universität Bielefeld
Metastability in a system of interacting nonlinear diffusions

October 2006: Novacella, Chaos and Complex Systems
Desynchronisation of Coupled Bistable Oscillators Perturbed by Additive Noise
June 2006: Poitiers, 6ème Conférence Internationale AIMS "Systèmes Dynamiques, Equations Différentielles et Applications"
Metastability and stochastic resonance in slow-fast systems with noise
June 2006: Séminaire de probabilités, Nancy
Synchronisation de diffusions couplées
April 2006: Seminar on Stochastic processes, Zürich
Metastability in a system of interacting diffusions
April 2006: Séminaire de probabilités, LATP Marseille
Synchronisation de diffusions couplées

June 2005: ZIF, Universität Bielefeld, Stochastic Partial Differential Equations and Climatology
Geometric singular perturbation theory for stochastic differential equations
May 2005: Max-Planck Institute, Leipzig, Stochastic climate models
Geometric singular perturbation theory applied to stochastic climate models
May 2005: Max-Planck Institute, Leipzig, Metastability, ageing, and anomalous diffusion
Metastability in irreversible diffusion processes and stochastic resonance

June 2004: Institut Henri Poincaré, Paris, Coupled Map Lattices 2004
Special session: Effect of noise on synchronization
April 2004: Nice, European Geophysical Union meeting (EGU04)
Universal properties of noise-induced transitions

November 2003: Institut Fourier, Grenoble
Passage sous l'effet d'un bruit à travers une orbite périodique instable
October 2003: WIAS, Berlin
On the noise-induced passage through an unstable periodic orbit
May 2003: Novacella, 4th European Advanced Studies Conference
On the noise-induced passage through an unstable periodic orbit

November 2002: LATP, Marseille
Théorie géométrique des perturbations singulières pour équations différentielles stochastiques
June 2002: Humboldt-Universität, Berlin
Geometric singular perturbation theory for stochastic differential equations

May 2001: EPF Lausanne
Résonance stochastique et hystérèse
March 2001: CPT, Marseille
Résonance stochastique et synchronisation induite par bruit

November 2000: Institut Fourier, Grenoble
L'effet de bruit additif sur les bifurcations dynamiques
October 2000: WIAS, Berlin
Dynamic pitchfork bifurcations with additive noise
September 2000: Universität Augsburg
The effect of additive noise on dynamic pitchfork bifurcations

September 1999: University of Victoria, BC
Hysteresis and scaling laws in dynamic bifurcations
May 1999: Bureau des Longitudes, Paris
Bifurcations dynamiques
February 1999: Universität Augsburg
Control of dynamic Hopf bifurcations