Large mass minimizers for isoperimetric problems with integrable nonlocal potentials - Inria - Institut national de recherche en sciences et technologies du numérique Access content directly
Journal Articles Nonlinear Analysis: Theory, Methods and Applications Year : 2021

Large mass minimizers for isoperimetric problems with integrable nonlocal potentials

Abstract

This paper is concerned with volume-constrained minimization problems derived from Gamow's liquid drop model for the atomic nucleus, involving the competition of a perimeter term and repulsive nonlocal potentials. We consider a large class of potentials, given by general radial nonnegative kernels which are integrable on $\mathbb{R}^n$, such as Bessel potentials, and study the behavior of the problem for large masses (i.e., volumes). Contrarily to the small mass case, where the nonlocal term becomes negligible compared to the perimeter, here the nonlocal term explodes compared to it.
However, using the integrability of those kernels, we rewrite the problem as the minimization of the difference between the classical perimeter and a nonlocal perimeter, which converges to a multiple of the classical perimeter as the mass goes to infinity. Renormalizing to a fixed volume, we show that, if the first moment of the kernels is smaller than an explicit threshold, the problem admits minimizers of arbitrarily large mass, which contrasts with the usual case of Riesz potentials. In addition, we prove that, any sequence of minimizers converges to the ball as the mass goes to infinity.
Finally, we study the stability of the ball, and show that our threshold on the first moment of the kernels is sharp in the sense that large balls go from stable to unstable. A direct consequence of the instability of large balls above this threshold is that there exist nontrivial compactly supported kernels for which the problems admit minimizers which are not balls, that is, symmetry breaking occurs.
Fichier principal
Vignette du fichier
isoperimetric_nonlocal.pdf (690.07 Ko) Télécharger le fichier
figure1.pdf (34.71 Ko) Télécharger le fichier
Origin Files produced by the author(s)

Dates and versions

hal-02496313 , version 1 (02-03-2020)
hal-02496313 , version 2 (03-11-2020)
hal-02496313 , version 3 (03-05-2021)

Identifiers

Cite

Marc Pegon. Large mass minimizers for isoperimetric problems with integrable nonlocal potentials. Nonlinear Analysis: Theory, Methods and Applications, 2021, 211, pp.112395. ⟨10.1016/j.na.2021.112395⟩. ⟨hal-02496313v3⟩
183 View
97 Download

Altmetric

Share

Gmail Mastodon Facebook X LinkedIn More