Seminar Details:

**LANS Informal Seminar***"Two mathematical topics in mutiscale science: random composites and metastable states"*

DATE: February 22, 2013

TIME: 10:00:00 - 11:00:00

SPEAKER: Claude Le Bris, *Ecole des Ponts and INRIA, France/Visiting Prof. at the Univ. of Chicago*

LOCATION: Building 240, 1404-1405, Argonne National Laboratory

**Description:**

The talk will overview two prototypical problems of multiscale computational science for which a mathematical approach can help. Both topics are related to materials science in a broad sense. The first topic is multiscale-in-space in nature: random composite materials are often prohibitively expensive to simulate numerically. A category of new, efficient numerical approaches that elaborates on the possibly small disorder present in such materials will be described. The second topic is multiscale-in-time in nature: the efficiency of the parallel replica method, simulating long term dynamics of potentially metastable evolutions, will be examined mathematically. The talk is joint work with a number of colleagues from Ecole des Ponts, INRIA, and several other institutions.

Please send questions or suggestions to Debojyoti Ghosh: ghosh at mcs dot anl dot gov.