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gr-qc2024★ 1 cited
Ringdown Analysis of Rotating Black Holes in Effective Field Theory Extensions of General Relativity
Simon Maenaut, Gregorio Carullo, Pablo A. Cano +4
Quasinormal modes of rapidly rotating black holes were recently computed in a generic effective-field-theory extension of general relativity with higher-derivative corrections. We…
hep-th2024
The Kontsevich-Segal Criterion in the No-Boundary State Constrains Anisotropy
Thomas Hertog, Oliver Janssen, Joel Karlsson
We show that the Kontsevich-Segal-Witten (KSW) criterion applied to the no-boundary state constrains anisotropic deformations of de Sitter space. We consider squashed and $S^…
hep-th2024
Stability of Axion-Saxion wormholes
T. Hertog, S. Maenaut, B. Missoni +2
We reconsider the perturbative stability of Euclidean axion wormholes. The quadratic action that governs linear perturbations is derived directly in Euclidean gravity. We demonstra…