Tootfinder

Constraining the rotating Simpson-Visser spacetime from the observed quasi-periodic oscillations in black holes
Anirban Dasgupta, Indrani Banerjee
https://arxiv.org/abs/2509.15761

Constraining the rotating Simpson-Visser spacetime from the observed quasi-periodic oscillations in black holes
Regular black holes (BHs) which are singularity-free alternatives to the standard black hole paradigm in General Relativity (GR), offer effective models for probing the interface between classical and quantum gravity. They serve as promising candidates for exploring the nature of strong gravity and potential extensions of GR by providing testing grounds to understand how quantum corrections might manifest in astrophysical black holes. In the present work, we investigate the regular BH scenario …

Finite-Time Splash in Free Boundary Problem of 3D Neo-Hookean Elastodynamics
Wei Zhang, Jie Fu, Chengchun Hao
https://arxiv.org/abs/2508.08751 https://arxi…

Finite-Time Splash in Free Boundary Problem of 3D Neo-Hookean Elastodynamics
This paper establishes finite-time splash singularity formation for 3D viscous incompressible neo-Hookean elastodynamics with free boundaries. The system features mixed stress-kinematic conditions where viscous-elastic stresses balance pressure forces at the evolving interface -- a configuration generating complex boundary integrals that distinguish it from Navier-Stokes or MHD systems. To address this challenge, we employ a Lagrangian framework inspired by Coutand and Shkoller (2019), developi…