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arXiv 2103.08110math.AP
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Lorentz流形上半线性wave equation的Dirichlet-to-Neumann映射

The Dirichlet-to-Neumann map for a semilinear wave equation on Lorentzian manifolds

Peter Hintz, Gunther Uhlmann, Jian Zhai

摘要:

本文考虑具有类时边界的Lorentz流形$(M,g)$上的半线性波动方程$\Box_g u+a u^4=0$,$a\neq 0$.我们表明,从知识的狄利克雷到诺依曼映射可以恢复度量$g$和系数$a$自然障碍。我们的证明依赖于扭曲的平面波的相互作用与散射控制参数的分析,以及高斯光束的解决方案。

英文摘要:

We consider the semilinear wave equation $\Box_g u+a u^4=0$, $a\neq 0$, on a Lorentzian manifold $(M,g)$ with timelike boundary. We show that from the knowledge of the Dirichlet-to-Neumann map one can recover the metric $g$ and the coefficient $a$ up to natural obstructions. Our proof rests on the analysis of the interaction of distorted plane waves together with a scattering control argument, as well as Gaussian beam solutions.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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