One- and two-phase minimizing free boundaries in heterogeneous media

Thu Nov 14, 2024 4:00 p.m.—5:00 p.m.
Exterior of Sheffield-Sterling-Strathcona Hall featuring a stone carving of Yale's coat of arms and motto

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Seminar: 
Analysis

Event time: 
Thursday, November 14, 2024 - 4:00pm

Location: 
KT 207

Speaker: 
William Feldman

Speaker affiliation: 
University of Utah

Event description: 
The Bernoulli free boundary problem is a classical model associated with certain interface problems from applications (capillarity, jet flows), and also arising in shape-optimization problems for Dirichlet eigenfunctions.  I will explain a result on the large-scale regularity theory of minimizing (and almost minimizing) one-phase free boundaries in periodic media, and a corresponding Liouville theorem for global minimizing solutions.  In a forthcoming work with Farhan Abedin (Lafayette College) we have also obtained analogous results in the two-phase case.  If times permits I will also discuss an application to quantitative homogenization in a shape-optimization problem for the principal Dirichlet eigenvalue.

Research Area(s): 
Analysis & PDE