I have first worked on random measures (super Brownian motion) which
describe a cloud of particles which evolve according to independent
Brownian motion and which perform a critical branching mechanism. I am
currently working on probabilistic models in biology (aging cells,
genetic population models with random or deterministic size) as well on
random trees (Galton-Watson trees, Lévy trees, pruning process on trees,
growing process on trees, non extinction conditionning) with links
towards coalescent and fragmentation processes.