On Scaling Laws for Multi-Well Nucleation Problems without Gauge Invariances

TL;DR

This paper investigates scaling laws for multi-well nucleation problems in shape-memory alloys, analyzing how lamination order affects energy scaling in various dimensions and laminate configurations.

Contribution

It provides new scaling laws for nucleation energy in multi-well problems without gauge invariances, considering different lamination orders and dimensions.

Findings

Derived scaling laws for volume and perturbation parameters.

Analyzed effects of lamination order on energy scaling.

Provided isoperimetric estimates with nonlocal anisotropies.

Abstract

In this article we study scaling laws for simplified multi-well nucleation problems without gauge invariances which are motivated by models for shape-memory alloys. Seeking to explore the role of the order of lamination on the energy scaling for nucleation processes, we provide scaling laws for various model problems in two and three dimensions. In particular, we discuss (optimal) scaling results in the volume and the singular perturbation parameter for settings in which the surrounding parent phase is in the first, the second and the third order lamination convex hull of the wells of the nucleating phase. Furthermore, we provide a corresponding result for the setting of an infinite order laminate which arises in the context of the Tartar square. In particular, our results provide isoperimetric estimates in situations in which strong nonlocal anisotropies are present.