Fully general Cauchy evolution of asymptotically AdS spacetimes: the non-linear instability of Kerr-AdS

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• Lorenzo Rossi, Queen Mary University of London
• Friday 15 March 2024, 13:00-14:00
• Potter room/Zoom.

If you have a question about this talk, please contact Xi Tong.

In addition to being at the core of the widely employed AdS/CFT correspondence, asymptotically anti-de Sitter (AdS) spacetimes with reflective boundary conditions can serve as the arena for a range of strong gravity effects: arbitrarily small perturbations are bound to remain in the bulk, where they continue to interact and typically become sizeable. Initially, I will review a numerical scheme that enables the Cauchy evolution of these spacetimes to be performed in full generality. Then, I will present the first simulations of the trapping mechanism occurring in the exterior of a Kerr-AdS black hole. This mechanism has been conjectured to cause a non-linear instability, the existence of which remains a topic of debate. The simulations offer insights into this debate, providing new perspectives on the non-linear instability of Kerr-AdS.

This talk is part of the DAMTP Friday GR Seminar series.

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