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arXiv · 2608.21532

Chiral symmetry and black hole isospectrality

Colin Weller·Dongjun Li·Pratik Wagle·Andrew Laeuger·Yanbei Chen·Nicolás Yunes
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Abstract

We prove that black-hole isospectrality between linearly independent solutions follows whenever radiative metric and matter perturbations are reconstructed from complex master variables obeying a closed, complex-linear system with complex-linear boundary conditions. If a phase rotation maps one parity sector to the other, then the even- and odd-parity QNM spectra coincide, and the perturbations are parity isospectral. A broad class of chiral-aligned theories satisfies these criteria. As an application, we demonstrate that subextremal Kerr--de Sitter black holes are parity isospectral.

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Colin Weller, Dongjun Li, Pratik Wagle, Andrew Laeuger, Yanbei Chen, Nicolás Yunes. 2026-08-21. Chiral symmetry and black hole isospectrality. https://arxiv.org/abs/2608.21532

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