Active Matter: the synergy between Maths and Physics, Paris
de
lundi 26 mai 2025 (09:00)
à
vendredi 13 juin 2025 (21:00)
lundi 26 mai 2025
09:30
Motility and Transport of Microorganisms. Lecture 1
-
Eric Clement
(
PMMH-ESPCI
)
Motility and Transport of Microorganisms. Lecture 1
Eric Clement
(
PMMH-ESPCI
)
09:30 - 10:30
Lecture 1: Introduction Bacteria motility Lecture 2: Revisisting colloid science Lecture 3: Anomalous transport of bacteria suspensions
10:30
Coffee break
Coffee break
10:30 - 11:00
11:00
Mathematical tools in Active Matter. Lecture 1
-
Leonid Berlyand
(
Penn State University, USA
)
Mathematical tools in Active Matter. Lecture 1
Leonid Berlyand
(
Penn State University, USA
)
11:00 - 12:00
Lecture 1: Deep Neural Nets and Classification problem. Lecture 2 and 3: Homogenization theory and PDE models
12:00
Lunch break
Lunch break
12:00 - 14:00
14:00
Special event: Order in Biological Development
Special event: Order in Biological Development
14:00 - 15:00
This event is not part of the thematic programme "Active Matter: the synergy between Maths and Physics". We encourage graduate student and postdocs to attend it Lecturer: Mark Bowick Affiliation: KAVLI INSTITUTE FOR THEORETICAL PHYSICS, UNIVERSITY OF CALIFORNIA SANTA BARBARA It will take place at Assemblée du Collège de France Seminar Room: amphithéâtre Mireille Delmas-Marty (salle 5). Adress: Place Marcelin-Berthelot, 75231 Paris cedex 05 Organised by: Prof. Jean-François JOANNY.
15:30
Theoretical and computational methods in active matter. Lecture 1
-
Ignasi Pagonabarraga
(
Dept. Condensed Matter Physics, University of Barcelona
)
Theoretical and computational methods in active matter. Lecture 1
Ignasi Pagonabarraga
(
Dept. Condensed Matter Physics, University of Barcelona
)
15:30 - 16:30
1. Simple models for active systems 2. Motlity and swimming at small scales 3. Mesoscopic models of active matter
19:00
Microswimmers: The Fantastic Voyage is at Hand
-
Eric Clement
(
PMMH-ESPCI
)
Microswimmers: The Fantastic Voyage is at Hand
Eric Clement
(
PMMH-ESPCI
)
19:00 - 20:00
Grand public event It will take place at Bâtiment Perrin. Ground floor. 11, Rue Pierre et Marie Curie 75005 Paris
mardi 27 mai 2025
09:30
Theoretical and computational methods in active matter. Lecture 2
-
Ignasi Pagonabarraga
(
Dept. Condensed Matter Physics, University of Barcelona
)
Theoretical and computational methods in active matter. Lecture 2
Ignasi Pagonabarraga
(
Dept. Condensed Matter Physics, University of Barcelona
)
09:30 - 10:30
1. Simple models for active system 2. Motlity and swimming at small scales 3. Mesoscopic models of active matter
10:30
Coffee break
Coffee break
10:30 - 11:00
11:00
Motility and Transport of Microorganisms. Lecture 2
-
Eric Clement
(
PMMH-ESPCI
)
Motility and Transport of Microorganisms. Lecture 2
Eric Clement
(
PMMH-ESPCI
)
11:00 - 12:00
Lecture 1: Introduction Bacteria motility Lecture 2: Revisisting colloid science Lecture 3: Anomalous transport of bacteria suspensions
12:00
Lunch break
Lunch break
12:00 - 14:00
14:00
Mathematical tools in Active Matter. Lecture 2
-
Leonid Berlyand
(
Penn State University, USA
)
Mathematical tools in Active Matter. Lecture 2
Leonid Berlyand
(
Penn State University, USA
)
14:00 - 15:00
Lecture 1: Deep Neural Nets and Classification problem. Lecture 2 and 3: Homogenization theory and PDE models
15:30
Pique-Nique
Pique-Nique
15:30 - 17:30
mercredi 28 mai 2025
09:30
Motility and Transport of Microorganisms. Lecture 3
-
Eric Clement
(
PMMH-ESPCI
)
Motility and Transport of Microorganisms. Lecture 3
Eric Clement
(
PMMH-ESPCI
)
09:30 - 10:30
Lecture 1: Introduction Bacteria motility Lecture 2: Revisisting colloid science Lecture 3: Anomalous transport of bacteria suspensions
10:30
Coffee break
Coffee break
10:30 - 11:00
11:00
Theoretical and computational methods in active matter. Lecture 3
-
Ignasi Pagonabarraga
(
Dept. Condensed Matter Physics, University of Barcelona
)
Theoretical and computational methods in active matter. Lecture 3
Ignasi Pagonabarraga
(
Dept. Condensed Matter Physics, University of Barcelona
)
11:00 - 12:00
1. Simple models for active systems 2. Motlity and swimming at small scales 3. Mesoscopic models of active matter
12:00
Lunch break
Lunch break
12:00 - 14:00
14:00
Mathematical tools in Active Matter. Lecture 3
-
Leonid Berlyand
(
Penn State University, USA
)
Mathematical tools in Active Matter. Lecture 3
Leonid Berlyand
(
Penn State University, USA
)
14:00 - 15:00
Lecture 1: Deep Neural Nets and Classification problem. Lecture 2 and 3: Homogenization theory and PDE models
jeudi 29 mai 2025
09:00
Ascension Day
Ascension Day
09:00 - 17:00
vendredi 30 mai 2025
samedi 31 mai 2025
dimanche 1 juin 2025
lundi 2 juin 2025
09:00
Registration
Registration
09:00 - 09:30
09:30
Welcome from Institut Henri Poincaré
-
Dominique Mouhanna
(
IHP
)
Welcome from Institut Henri Poincaré
Dominique Mouhanna
(
IHP
)
09:30 - 09:40
09:40
Two active matter models using an immersed boundary framework: self-avoidant droplets and single-point swimmers.
-
Lisa Fauci
(
Tulane University
)
Two active matter models using an immersed boundary framework: self-avoidant droplets and single-point swimmers.
Lisa Fauci
(
Tulane University
)
09:40 - 10:20
10:20
Coffee break
Coffee break
10:20 - 10:50
10:50
Transport and self-organization in living fluids
-
Matthias Weiss
(
Experimental Physics I, University of Bayreuth, Germany
)
Transport and self-organization in living fluids
Matthias Weiss
(
Experimental Physics I, University of Bayreuth, Germany
)
10:50 - 11:30
11:30
Directing active flows
-
Petia Vlahovska
(
Northwestern University
)
Directing active flows
Petia Vlahovska
(
Northwestern University
)
11:30 - 12:10
12:10
Lunch break
Lunch break
12:10 - 14:00
14:00
Special event: Nonabelian Topological Defects
Special event: Nonabelian Topological Defects
14:00 - 15:00
This event is not part of the thematic programme "Active Matter: the synergy between Maths and Physics". We encourage participants of this program to attend it Lecturer: Mark Bowick Affiliation: KAVLI INSTITUTE FOR THEORETICAL PHYSICS, UNIVERSITY OF CALIFORNIA SANTA BARBARA It will take place at Assemblée du Collège de France Seminar Room: amphithéâtre Mireille Delmas-Marty (salle 5). Adress: Place Marcelin-Berthelot, 75231 Paris cedex 05 Organised by: Prof. Jean-François JOANNY.
15:20
Coffee break
Coffee break
15:20 - 15:50
15:50
The effect of internal state in Chemotaxis and Phototaxis
-
Min Tang
(
Shanghai Jiao Tong University
)
The effect of internal state in Chemotaxis and Phototaxis
Min Tang
(
Shanghai Jiao Tong University
)
15:50 - 16:30
16:30
TBA
-
Daniela Kraft
(
University of Leiden
)
TBA
Daniela Kraft
(
University of Leiden
)
16:30 - 17:10
mardi 3 juin 2025
09:00
Condensation and Synchronization in Aligning Chiral Active Matter
-
Hugues Chaté
(
CEA-Saclay
)
Condensation and Synchronization in Aligning Chiral Active Matter
Hugues Chaté
(
CEA-Saclay
)
09:00 - 09:40
09:40
Change of bifurcation type in a 2D free boundary model of a moving cell with nonlinear diffusion
-
Tim Laux
(
Heidelberg University
)
Change of bifurcation type in a 2D free boundary model of a moving cell with nonlinear diffusion
Tim Laux
(
Heidelberg University
)
09:40 - 10:20
10:20
Coffee break + Group Photo
Coffee break + Group Photo
10:20 - 10:50
10:50
Swimming in suspensions: from pattern formation to stability
-
Laurel Ohm
(
University of Wisconsin - Madison
)
Swimming in suspensions: from pattern formation to stability
Laurel Ohm
(
University of Wisconsin - Madison
)
10:50 - 11:30
11:30
Aggregation-Diffusion Phenomena: From microscopic models to free boundary problems
-
Antoine Mellet
(
University of Maryland
)
Aggregation-Diffusion Phenomena: From microscopic models to free boundary problems
Antoine Mellet
(
University of Maryland
)
11:30 - 12:10
12:10
Lunch break
Lunch break
12:10 - 14:00
14:00
Poster Session 2
Poster Session 2
14:00 - 15:20
Axel Voigt - Phase separation and interface dynamics of mixtures of active and passive flows. Forouh Maleki - Instabilities in a growing system of active particles Jingyi Li - Arrested Development of Active Suspensions in Liquid Crystals. Jose J Munoz - Inference of muscle contraction and surface friction in worm locomotion. Léo Touzo - Run-and-tumble particles with long-range interactions: The active Dyson Brownian motion Thi Phung - Optimal Control of Several Motion Model Danqi Lang - Relaxations in glass-forming systems: the anti-correlation between excitations and locally-favored structures. Birte Geerds - Twists, turns and surprising shapes: How a 2D liquid crystal influences geometry Mandal Sayar - Magnetic Spinners in Bacterial Baths. Min-Jhe Lu - Active Matter Modeling of Tumors: Mechanical Forces and Chemical Reactions in Cancer Progression Raphaël Maire - Non-equilibrium interfaces: from suppressed to enhanced fluctuations Paule Dagenais - Collective ratchetaxis in subconfluent cell monolayers Soumyadeep Mondal - Coarsening Dynamics of Aster Defects in Model Polar Active Matter Stefan Köstler - Arrested Coarsening: Multistable dynamics in active droplets Zhouyang Ge - Nonmonotonic diffusion in sheared active suspensions of squirmers Adnan Anwar - Inverse analysis of heart growth during morphogenesis Italo Salas - Mixing by active carpets in confined environments.
15:20
Coffee break
Coffee break
15:20 - 15:50
15:50
Kinetic theory methods applied to active matter
-
Rodrigo Soto
(
Universidad de Chile
)
Kinetic theory methods applied to active matter
Rodrigo Soto
(
Universidad de Chile
)
15:50 - 16:30
16:30
Mirror Langevin diffusion for sampling a non log-concave measure supported on a bounded domain
-
Magali Tournus
(
Institut Mathématique de Marseille
)
Mirror Langevin diffusion for sampling a non log-concave measure supported on a bounded domain
Magali Tournus
(
Institut Mathématique de Marseille
)
16:30 - 17:10
mercredi 4 juin 2025
09:00
Mechanochemical Feedbacks and Symmetry Breaking: A New Model for Pattern Formation in Hydra Regeneration
-
Anna Marciniak-Czochra
(
Heidelberg University
)
Mechanochemical Feedbacks and Symmetry Breaking: A New Model for Pattern Formation in Hydra Regeneration
Anna Marciniak-Czochra
(
Heidelberg University
)
09:00 - 09:40
09:40
Brownian particles in non-equilibrium baths
-
Clemens Bechinger
(
University of Konstanz
)
Brownian particles in non-equilibrium baths
Clemens Bechinger
(
University of Konstanz
)
09:40 - 10:20
10:20
Coffee break
Coffee break
10:20 - 10:50
10:50
Initiation of motility on a compliant substrate
-
Pierre Recho
(
CNRS, UGA
)
Initiation of motility on a compliant substrate
Pierre Recho
(
CNRS, UGA
)
10:50 - 11:30
11:30
Nonlinear stability and non-self adjointness in a free boundary model of cell motion
-
Alex Safsten
(
University of Maryland
)
Nonlinear stability and non-self adjointness in a free boundary model of cell motion
Alex Safsten
(
University of Maryland
)
11:30 - 12:10
12:10
Lunch break
Lunch break
12:10 - 14:00
14:00
Modelling of dense crowds with Mean-Field Games
-
Cecile Appert-Rolland
(
IJCLab - CNRS - Univ. Paris-Saclay
)
Modelling of dense crowds with Mean-Field Games
Cecile Appert-Rolland
(
IJCLab - CNRS - Univ. Paris-Saclay
)
14:00 - 14:40
14:40
Bacterial chemotaxis in complex environments
-
Katja Taute
(
Leipzig University
)
Bacterial chemotaxis in complex environments
Katja Taute
(
Leipzig University
)
14:40 - 15:20
jeudi 5 juin 2025
09:00
Cell-cell Adhesion micro-and macroscopic models via Aggregation-Diffusion systems
-
Jose Antonio Carrillo
(
University of Oxford
)
Cell-cell Adhesion micro-and macroscopic models via Aggregation-Diffusion systems
Jose Antonio Carrillo
(
University of Oxford
)
09:00 - 09:40
09:40
Statistical Mechanics of Intelligent Active Matter: Optimal Transport, Synchronization, and Criticality in Bacteria and Sheep Herds
-
Fernando Peruani
(
Cergy
)
Statistical Mechanics of Intelligent Active Matter: Optimal Transport, Synchronization, and Criticality in Bacteria and Sheep Herds
Fernando Peruani
(
Cergy
)
09:40 - 10:20
10:20
Coffee break
Coffee break
10:20 - 10:50
10:50
Environment-stored memory in active matter: a framework for extra-cellular matrix remodeling
-
Ram Adar
(
Technion - Israel Institute of Technology
)
Environment-stored memory in active matter: a framework for extra-cellular matrix remodeling
Ram Adar
(
Technion - Israel Institute of Technology
)
10:50 - 11:30
11:30
Mean settling speed and Batchelor's formula for particle suspensions
-
Mitia Duerinckx
(
Université Libre de Bruxelles
)
Mean settling speed and Batchelor's formula for particle suspensions
Mitia Duerinckx
(
Université Libre de Bruxelles
)
11:30 - 12:10
12:10
Lunch break
Lunch break
12:10 - 14:00
14:00
Poster Session 3
Poster Session 3
14:00 - 15:20
Dowan Koo - Large time behavior of hydrodynamic flocking models with interaction potentials. Eyal Heifetz - Swarm coherence mechanism for jellyfish Finn Münnich - Pattern selection in a PDE model of mechanochemical interactions Benjamin Perez Estay - Extremely large bacteria collective motion Joaquín Ernesto Morales Palominos - Memory effects in Diel vertical migration: modeling fractional Brownian motion in Physics of active matter. Juan Pablo Carrillo-Mora - Rotational depinning and activation dynamics of a chiral self-propelled robot Maja Milas - Understanding stimulated tissue growth using agent-based simulations and Fisher-Kolmogorov models Mathis Guéneau - Siegmund duality for physicists: from hard walls to absorbing boundary conditions Mehran Erfanifam - Convection Flow Induced by Shearing of Spherical Granular Materials in a Split-Bottom Couette Cell Oleksii Krupchytskyi - Change of the Bifurcation Type in a Free-Boundary PDE Model of Cell Motion Shantanu Raikwar - Phototactic decision making by micro-algae Tristan Cerdin - Counting active particles to quantify their dynamics Yuv Agarwal - Curving the Path of Active Matter Kristiana Mihali & Dennis Worthmuller - TBA Shambhavi Dikshit - Theoretical study on how activity and lamina alter chromatin organisation in variable confinements Shunsuke Yabunaka - Drag Coefficient in Near-Critical Mixtures: Solving Hydrodynamic Fields with Improved Numerics Spencer Dang - Effective viscosity of a two dimensional passive suspension in a liquid crystal solvent
15:20
Coffee break
Coffee break
15:20 - 15:50
15:50
Analysis of equations for living tissues and free boundary problems
-
Benoit Perthame
(
Sorbonne Universite
)
Analysis of equations for living tissues and free boundary problems
Benoit Perthame
(
Sorbonne Universite
)
15:50 - 16:30
16:30
Active bacterial transport in complex media
-
Nuris Figueroa
(
University of Colorado Boulder
)
Active bacterial transport in complex media
Nuris Figueroa
(
University of Colorado Boulder
)
16:30 - 17:10
18:00
Conference Dinner
Conference Dinner
18:00 - 21:00
vendredi 6 juin 2025
09:00
Hidden behavioural complexity in the navigation patterns of single-celled eukaryotes
-
Kirsty Wan
(
University of Exeter
)
Hidden behavioural complexity in the navigation patterns of single-celled eukaryotes
Kirsty Wan
(
University of Exeter
)
09:00 - 09:40
09:40
Stochastic kinetic theory of dilute microswimmer suspensions
-
Alexander Morozov
(
University of Edinburgh
)
Stochastic kinetic theory of dilute microswimmer suspensions
Alexander Morozov
(
University of Edinburgh
)
09:40 - 10:20
10:20
Coffee break
Coffee break
10:20 - 10:50
10:50
A Soft Matter Perspective on Biofilm Assemblies: From Structure to Rheology
-
Eleonora Secchi
(
ETH Zurich
)
A Soft Matter Perspective on Biofilm Assemblies: From Structure to Rheology
Eleonora Secchi
(
ETH Zurich
)
10:50 - 11:30
11:30
Self-focusing of swimming bacteria in flowing nematic order
-
Yanan LIU
(
Northwest University
)
Self-focusing of swimming bacteria in flowing nematic order
Yanan LIU
(
Northwest University
)
11:30 - 12:10
12:10
Lunch break
Lunch break
12:10 - 14:00
14:00
Mathematical analysis and numerical simulations on Models of Cell Motility
-
Nicolas Meunier
(
Lamme Université dEvry
)
Mathematical analysis and numerical simulations on Models of Cell Motility
Nicolas Meunier
(
Lamme Université dEvry
)
14:00 - 14:40
14:40
Nonlinear Stability for chemotactic clustering with discontinuous advection
-
Franca Hoffmann
(
California Institute of Technology
)
Nonlinear Stability for chemotactic clustering with discontinuous advection
Franca Hoffmann
(
California Institute of Technology
)
14:40 - 15:20
samedi 7 juin 2025
dimanche 8 juin 2025
lundi 9 juin 2025
09:00
Whit Monday
Whit Monday
09:00 - 17:00
mardi 10 juin 2025
09:20
Bifurcations and Stablity
-
Eric Clement
(
PMMH-ESPCI
)
Leonid Berlyand
(
Penn State University, USA
)
Tim Laux
(
Heidelberg University
)
Anke Lindner
(
PMMH-ESPCI
)
Bifurcations and Stablity
Eric Clement
(
PMMH-ESPCI
)
Leonid Berlyand
(
Penn State University, USA
)
Tim Laux
(
Heidelberg University
)
Anke Lindner
(
PMMH-ESPCI
)
09:20 - 09:30
09:30
Models coupling diffusive and non-diffusive components: Stability of patterns and emergence of singularities
-
Finn Münnich
(
Heidelberg University
)
Models coupling diffusive and non-diffusive components: Stability of patterns and emergence of singularities
Finn Münnich
(
Heidelberg University
)
09:30 - 10:00
10:00
Pattern selection in a mechanochemical model of pattern formation
-
Szymon Cygan
(
University of Heidelberg
)
Pattern selection in a mechanochemical model of pattern formation
Szymon Cygan
(
University of Heidelberg
)
10:00 - 10:30
10:30
Break
Break
10:30 - 11:00
11:00
Bifurcations and Stablity
-
Anna Marciniak-Czochra
(
Heidelberg University
)
Ignasi Pagonabarraga
(
Dept. Condensed Matter Physics, University of Barcelona
)
Jose Antonio Carrillo
(
University of Oxford
)
Alexander Morozov
(
University of Edinburgh
)
Eric Clement
(
PMMH-ESPCI
)
Bifurcations and Stablity
Anna Marciniak-Czochra
(
Heidelberg University
)
Ignasi Pagonabarraga
(
Dept. Condensed Matter Physics, University of Barcelona
)
Jose Antonio Carrillo
(
University of Oxford
)
Alexander Morozov
(
University of Edinburgh
)
Eric Clement
(
PMMH-ESPCI
)
11:00 - 12:00
Open discussion on the questions below. - What are the major questions on bifurcations and stability in active matter ? - What kind of mathematical techniques for bifurcation and stability need to be develop and in what kind of problems. Anyone else who wants to talk on this session is also welcome to participate in discussion.
12:00
Lunch break
Lunch break
12:00 - 14:00
14:00
TBA
-
Oleksii Krupchytskyi
(
The Pennsylvania State University
)
TBA
Oleksii Krupchytskyi
(
The Pennsylvania State University
)
14:00 - 14:30
mercredi 11 juin 2025
09:20
Introduction to the session on Modeling Active Particles: Theory and Applications
-
Laetitia Giraldi
(
CR INRIA
)
Introduction to the session on Modeling Active Particles: Theory and Applications
Laetitia Giraldi
(
CR INRIA
)
09:20 - 09:30
09:30
Controlling swarms of micro-swimmers using collective patterns
-
Laetitia Giraldi
(
CR INRIA
)
Controlling swarms of micro-swimmers using collective patterns
Laetitia Giraldi
(
CR INRIA
)
09:30 - 10:00
10:00
A 3d mathematical model of the mucociliary transport
-
Sébastien Martin
(
MAP5, Université Paris Cité
)
A 3d mathematical model of the mucociliary transport
Sébastien Martin
(
MAP5, Université Paris Cité
)
10:00 - 10:30
10:30
Break
Break
10:30 - 11:00
11:00
Mathematical models for flagellar activation mechanisms
-
Irene Anello
Mathematical models for flagellar activation mechanisms
Irene Anello
11:00 - 11:30
11:30
TBA
-
Spencer Dang
(
The Pennsylvania State University
)
TBA
Spencer Dang
(
The Pennsylvania State University
)
11:30 - 12:00
12:00
Arrested development and traveling waves of active suspensions in liquid crystals
-
Jingyi Li
(
University of Wisconsin-Madison
)
Arrested development and traveling waves of active suspensions in liquid crystals
Jingyi Li
(
University of Wisconsin-Madison
)
12:00 - 12:30
jeudi 12 juin 2025
09:20
Mathematical methods for data science and machine learning
-
Franca Hoffmann
(
California Institute of Technology
)
Tim Laux
(
Heidelberg University
)
Mathematical methods for data science and machine learning
Franca Hoffmann
(
California Institute of Technology
)
Tim Laux
(
Heidelberg University
)
09:20 - 09:30
09:30
Learning PDEs from Data
-
Franca Hoffmann
(
California Institute of Technology
)
Learning PDEs from Data
Franca Hoffmann
(
California Institute of Technology
)
09:30 - 10:00
10:00
The connection between Analysis, Geometry and Combinatorial Optimization in the volume constrained MBO scheme for Data Science
-
Fabius Krämer
(
Heidelberg University
)
The connection between Analysis, Geometry and Combinatorial Optimization in the volume constrained MBO scheme for Data Science
Fabius Krämer
(
Heidelberg University
)
10:00 - 10:30
10:30
Coffee break
Coffee break
10:30 - 11:00
11:00
Random weights of DNNs and emergence of fixed points
-
Victor Slavin
(
Ukrainian Academy of Sciences
)
Random weights of DNNs and emergence of fixed points
Victor Slavin
(
Ukrainian Academy of Sciences
)
11:00 - 11:30
vendredi 13 juin 2025