Carnegie Mellon
Department of Mathematical 

Robert Kohn, Courant Institute, NYU

"Upper Bounds on Coarsening Rates"


This talk addresses energy-driven coarsening, in the context of (a) phase separation (joint work with Felix Otto), and (b) epitaxial growth (joint work with Xiaodong Yan). Numerical and physical experiments suggest statistically self-similar behavior, however virtually nothing is known with mathematical rigor. I will discuss a new scheme for proving upper bounds on the coarsening rate, consistent with the conjectured self-similar behavior. The method combines (i) suitable energy estimates, (ii) a sort of isoperimetric inequality, and (iii) an ODE lemma.

THURSDAY, October 24, 2002
Time: 1:30 P.M.
Location: PPB 300