Siegel der Universität Augsburg

Universität Augsburg
Institut für Mathematik

Siegel der Universität Augsburg

 

Oberseminar Analysis

 

M. Sc. Flavio Antonio Donnarumma
Friedrich-Alexander-Universität, Erlangen

 
spricht am
 
Donnerstag, 12. Juni 2025
 
um
 
15:00 Uhr
 
im
 
Raum 2004 (L1)
 
über das Thema:
 

»Γ-convergence and stochastic homogenization of second order singular perturbation models for phase transitions«

Abstract:
We study the effective behavior of random, heterogeneous, anisotropic, second order phase transitions energies that arise in the study of pattern formations in physical-chemical systems. Specifically, we study the asymptotic behavior, as ϵ goes to zero, of random heterogeneous anisotropic functionals in which the second order perturbation competes not only with a double well potential but also with a possibly negative contribution given by the first order term. We prove that, under suitable growth conditions and under a stationarity assumption, the functionals Γ-converge almost surely to a surface energy whose density is independent of the space variable. Furthermore, we show that the limit surface density can be described via a suitable cell formula and is deterministic when ergodicity is assumed.

 

Hierzu ergeht herzliche Einladung.
Prof. Dr. Bernd Schmidt



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