The second Robin eigenvalue in non-compact rank-1 symmetric spaces

Xiaolong Li; Kui Wang; Haotian Wu

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arXiv · 2208.07546

The second Robin eigenvalue in non-compact rank-1 symmetric spaces

Xiaolong Li·Kui Wang·Haotian Wu

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Abstract

In this paper, we prove a quantitative spectral inequality for the second Robin eigenvalue in non-compact rank-1 symmetric spaces. In particular, this shows that for bounded domains in non-compact rank-1 symmetric spaces, the geodesic ball maximises the second Robin eigenvalue among domains of the same volume, with negative Robin parameter in the regime connecting the first nontrivial Neumann and Steklov eigenvalues. This result generalises the work of Freitas and Laugesen in the Euclidean setting [FL21] as well as our previous work in the hyperbolic space [LWW20].

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Xiaolong Li, Kui Wang, Haotian Wu. 2022-08-16. The second Robin eigenvalue in non-compact rank-1 symmetric spaces. https://arxiv.org/abs/2208.07546

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