Selected topics in transport phenomena: deterministic and probabilistic aspects

Uniform regularity for linear kinetic equations with random input based on hypocoercivity

Li Wang

Univeristy of Minnesota


In this talk we consider the effect of randomness in kinetic equations that preserve mass. The analysis is carried out in a general setting, with the regularity result not depending on the specific form of the collision term, the probability distribution of the random variables, or the regime the system is in. The proof relies on the explicit expression of the high order derivatives of the solution in the random space, and the convergence in time is mainly based on hypocoercivity, which, despite the popularity in PDE analysis of kinetic theory, has rarely been used for numerical algorithms. This is a joint work with Qin Li.