A Large Data Regime for non-linear Wave Equations

Jinhua Wang; Pin Yu

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arXiv · 1210.2056

A Large Data Regime for non-linear Wave Equations

Jinhua Wang·Pin Yu

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Abstract

For semi-linear wave equations with null form non-linearities on $\mathbb{R}^{3+1}$, we exhibit an open set of initial data which are allowed to be large in energy spaces, yet we can still obtain global solutions in the future. We also exhibit a set of localized data for which the corresponding solutions are strongly focused, which in geometric terms means that a wave travels along an specific incoming null geodesic in such a way that almost all of the energy is confined in a tubular neighborhood of the geodesic and almost no energy radiating out of this tubular neighborhood.

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Jinhua Wang, Pin Yu. 2012-10-07. A Large Data Regime for non-linear Wave Equations. https://arxiv.org/abs/1210.2056

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