PHY565 - Physics of living systems: fluctuations, self-organization and active matter

Outline:
1- Introduction: living systems as out-of-equilibrium systems
2- Diffusion and active transport in living systems
3- Self-organization and pattern formation
4- Fluctuations, equilibrium and out-of-equilibrium processes in living systems
5- Entropic forces and fluctuations: polymers
6- Entropic forces and fluctuations: membranes and interfaces
7- Introduction to active matter physics
8- Physics of cell migration: swimmers and crawlers
9- Collective migration and pattern formation in active matter

From a physical point of view, living entities are complex systems with spectacular properties: for example, living cells can exert forces on their environment, divide, self-propel, or assemble into organs of complex shapes. These unusual physical properties arise from the fact that living cells - and more generally living systems - constantly consume energy at the microscopic scale, and are therefore non-equilibrium systems (also called active).

The objective of the course is to understand some remarkable properties of cells and cellular collectives - migration, shape, collective behaviors, pattern formation - that correspond to crucial biological functions, as emerging from basic physical mechanisms that are generic to non-equilibrium systems.

The course will present the basic theoretical tools needed to describe living matter, from soft matter physics, from equilibrium and non-equilibrium statistical physics, and will present an introduction to the physics of active matter. Theoretical developments will be systematically placed in a biological context and illustrated by recent experimental results.

Prerequisites: No strict prerequisites in physics as well as in biology, although a basic knowledge in general physics (statistical physics) is recommended. This course is independent and complementary to PHY552B.

Language: English and/or French depending on audience

ECTS : 5