Rousset Mathias

Mathias Rousset

Civil Status:
Born: February 8, 1980. Nationality: French.

Academic Position:
I hold a permanent INRIA research position (Chargé de Recherche INRIA) at INRIA Rennes - Bretagne Atlantique and at the Mathematics research institute of Rennes IRMAR - UMR 6625.

INRIA Project-Team:
Since January 2018, I have the privilege of managing the SIMSMART Project-Team. SIMSMART is the follow-up to the ASPI Project-Team.

Mail:INRIA Rennes - Bretagne Atlantique, Campus de Beaulieu, 35042 Rennes cedex, France.

Phone: +332 99 84 75 43.



ERC MsMaths (2014-2019, PI: Tony Lelièvre)

Research Topics

Probability in Mathematical Physics and Computational Physics.

Few simulations

(i)-In this simulation with periodic boundary conditions, a dimer (in red) is coupled to a simple model for solvant (in green). The slow degree of freedom (reaction coordinate) is the distance between the two atoms of the dimer, and has two different stable configurations (blue or red). The fast degrees of freedom comes from the motion of the atoms of the solvant (in green). In a second simulation, an adaptive biasing technique is used to accelerate the transition between configurations (between blue and red) of the dimer (references: (10), (6), and (5)).
(ii)-In this simulation, we simulate a large polymeric chain of atoms attached at one hand and coupled to a thermostat. Bonds, and bond angles between atoms are rigid, and the time step is limited by the fast oscillation of the torsion angles. In a second simulation, the oscillation of torsion angles are correlated, using an implicit mass-matrix penalty which does not modify the probability distribution of the different configurations of the system. It results in larger time steps, and in an accelerated simulation (references: (8)).