Séminaire Analyse-Probabilités

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Intervenant : BERGER Quentin (Paris Nord)
Titre :
Influence of disorder for different pinning models

Le : 13/01/2026 de : 10:30 à : 11:30
The goal of this talk is to give an overview of the question of disorder relevance for physical systems, through the example of pinning models. The main question is to determine whether an arbitrarily small amount of disorder may change the properties of the system, in which case disorder is said to be relevant. I will consider in particular two closely related pinning models (pinning on a line of defect vs. pinning on a random walk) for which this question has been studied. In works with Hubert Lacoin (IMPA), we have established some criteria for disorder relevance in both models: somewhat surprisingly, the criteria are slightly different for the two models, which was not anticipated in the physics literature.
Salle : A711

Séminaire Analyse-Probabilités

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Intervenant : GRASSELLI Viviana (IECL - Metz)
Titre :
Speed of propagation for the boson star equation

Le : 27/01/2026 de : 09:00 à : 09:00
We will consider a non linear equation describing a large group of gravitating bosons that form a boson star. After briefly discussing the well-posedness of the equation, we will study some dispersive properties of the solution, in particular how fast it propagates and its maximal and minimal velocities of propagation. These results are a joint work with Sébastien Breteaux and Jérémy Faupin.
Salle : A711

Séminaire Analyse-Probabilités

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Intervenant : VAN DEN BOSCH Hanne (Universidad de Chile)
Titre :
TBA

Le : 17/02/2026 de : 09:00 à : 09:00

Salle : A711

Séminaire Analyse-Probabilités

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Intervenant : SUN Changzhen (CNRS & Laboratoire de Mathématiques de Besançon)
Titre :


Le : 14/04/2026 de : 10:30 à : 11:30

Salle : A711

Séminaire Analyse-Probabilités

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Intervenant : AYI Nathalie (LJLL)
Titre :
TBA

Le : 19/05/2026 de : 10:30 à : 11:30
TBA
Salle : A711