Coercivity and Gamma-convergence of the p-energy of sphere-valued Sobolev maps

Michele Caselli (SNS Pisa)

Oct 02. 2025, 09:30 — 10:30

In this talk, we explore the asymptotic behavior of sphere-valued Sobolev maps as their p-energy approaches the critical Sobolev exponent (i.e., the codimension of their singular set). Based on recent work jointly with Mattia Freguglia and Nicola Picenni, we show compactness and Gamma-convergence of the (renormalized) p-energy to the area functional of the suitable dimension. As a corollary, we also recover a classical result by Hardt and Lin on the convergence of the energy densities of p-energy minimizing maps with fixed boundary conditions, as p approaches the critical exponent. Our result establishes the analog for the p-energy of a celebrated work by Alberti, Baldo, and Orlandi for the Ginzburg-Landau energy in general dimension and codimension. 

Further Information
Venue:
ESI Boltzmann Lecture Hall
Recordings:
Recording
Associated Event:
Free Boundary Problems (Thematic Programme)
Organizer(s):
Serena Dipierro (UWA, Perth)
Julian Fischer (ISTA, Klosterneuburg)
Matteo Novaga (U Pisa)
Elisabetta Rocca (U of Pavia)
Xavier Ros-Oton (U of Barcelona)
Ulisse Stefanelli (U of Vienna)
Enrico Valdinoci (UWA, Perth)