Uniqueness of the blow-up for some Alt-Phillips cones
Abstract
We establish uniqueness of blow-ups, with sharp quantitative convergence, for several classes of singular minimizing cones in the Alt-Phillips problem, in the range γ∈(0,2). As a consequence, we obtain uniqueness at every free boundary point in dimensions d=2,3,4 for γ∈(1,2), and in dimensions d≥ 5 for γ∈(1,3/2). The proof of uniqueness is based on three new logarithmic epiperimetric inequalities. The sharp distinction between polynomial and logarithmic convergence is governed by a finite-dimensional integrability condition (sub-integrability) for the spherical linearized problem. We prove this sharpness for the radial cone and its cylindrical extensions through an explicit integrability and bifurcation analysis, showing in particular that logarithmic convergence may be sharp even in dimension two. In contrast, we show that the one-dimensional cone is exceptional: although the integrability condition fails, the convergence is polynomial. Finally, we characterize the minimality of the radial cone in terms of d and γ by means of a one-dimensional calibration argument, exhibiting in dimension d≥6 a nontrivial regime in which the radial cone is stable but not minimizing.
Related
BibTeX
@misc{carducci2026uniqueness,
title = {{Uniqueness of the blow-up for some Alt-Phillips cones}},
author = {Matteo Carducci and Giorgio Tortone},
howpublished = {arXiv},
year = {2026},
month = oct,
doi = {10.48550/arxiv.2606.17015},
eprint = {2606.17015},
archivePrefix = {arXiv},
url = {https://arxiv.org/abs/2606.17015},
}
RIS
TY - UNPB
TI - Uniqueness of the blow-up for some Alt-Phillips cones
AU - Matteo Carducci
AU - Giorgio Tortone
PY - 2026
DA - 2026/10/27
PB - arXiv
DO - 10.48550/arxiv.2606.17015
UR - https://arxiv.org/abs/2606.17015
AB - We establish uniqueness of blow-ups, with sharp quantitative convergence, for several classes of singular minimizing cones in the Alt-Phillips problem, in the range γ∈(0,2). As a consequence, we obtain uniqueness at every free boundary point in dimensions d=2,3,4 for γ∈(1,2), and in dimensions d≥ 5 for γ∈(1,3/2). The proof of uniqueness is based on three new logarithmic epiperimetric inequalities. The sharp distinction between polynomial and logarithmic convergence is governed by a finite-dimensional integrability condition (sub-integrability) for the spherical linearized problem. We prove this sharpness for the radial cone and its cylindrical extensions through an explicit integrability and bifurcation analysis, showing in particular that logarithmic convergence may be sharp even in dimension two. In contrast, we show that the one-dimensional cone is exceptional: although the integrability condition fails, the convergence is polynomial. Finally, we characterize the minimality of the radial cone in terms of d and γ by means of a one-dimensional calibration argument, exhibiting in dimension d≥6 a nontrivial regime in which the radial cone is stable but not minimizing.
ER -