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arXiv · 2502.07385

Non-uniqueness for the nonlinear dynamical Lam\'e system

Shunkai Mao·Peng Qu
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Abstract

We consider the Cauchy problem for the nonlinear dynamical Lam\'e system with double wave speeds in a $d$-dimensional $(d=2,3)$ periodic domain. Moreover, the equations can be transformed into a linearly degenerate hyperbolic system. We could construct infinitely many continuous solutions in $C^{1,\alpha}$ emanating from the same small initial data for $\alpha<\frac{1}{60}$. The proof relies on the convex integration scheme. We construct a new class of building blocks with compression structure by using the double wave speeds characteristic of the equations.

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Shunkai Mao, Peng Qu. 2025-02-11. Non-uniqueness for the nonlinear dynamical Lam\'e system. https://arxiv.org/abs/2502.07385

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