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Date
Presenter
Title and Abstract (Slides: authorized only)
2025/4/7
Akihiro Ishibashi
On the stability of static spacetimes (w/o a Killing horizon)
The exterior of the Schwarzschild black hole is known to be stable against linear perturbations. The complete proof is established by exploiting the energy integral method and spectral theory. I will first review the standard arguments for the stability analysis. Then, I will discuss possible challenges in applying these arguments to the recently discovered holographic semiclassical instability of de Sitter and AdS spacetimes induced by the backreaction of CFT stress-energy.
2025/4/28
Yoo Chulmoon
TBA
TBA