12 citations · 12 across the 3 of their papers we have counts for
3 papers
hep-th2023
Photon sphere and quasinormal modes in AdS/CFT
Koji Hashimoto, Kakeru Sugiura, Katsuyuki Sugiyama +1
Photon spheres are the characteristic of general black holes, thus are a suitable touchstone for the emergence of gravitational spacetime in the AdS/CFT correspondence. We provide…
hep-th2023
Bulk reconstruction of AdS metrics and developing kinematic space
Kakeru Sugiura, Daichi Takeda
The metrics of the global, Poincaré, and Rindler AdS are explicitly reconstructed with given lightcone cuts. We first compute the metric up to a conformal factor with the l…
hep-th2022★ 12 cited
Causality bounds chaos in geodesic motions
Koji Hashimoto, Kakeru Sugiura
Predictability is ensured by causality while lost in chaos. To reconcile these two popular notions, we study chaos in geodesic motions in generic curved spacetimes with external po…