6 papers
The mini-Page Curve in Cosmology
Ricardo EspÃndola, Shoichiro Miyashita
The black hole information paradox has motivated extensive study of how and when information escapes from evaporating black holes. Here we address the analogous question for cosmol…
Flow-geometry microstates
Ricardo EspÃndola, Shoichiro Miyashita
We construct geometric microstates for a class of two-dimensional flow geometriesspacetimes that interpolate from an asymptotic AdS boundary to a dS static patch in the…
Spectral Admissibility of Real Observers in Euclidean de Sitter Gravity
Ricardo EspÃndola, Ahmed Farag Ali
The Euclidean de Sitter path integral contains the familiar phase associated with conformal negative modes. Maldacena's construction shows that a suitably included real observer ca…
Islands and traversable wormholes
Ricardo EspÃndola, Viktor Jahnke, Keun-Young Kim
We study information recovery in black hole evaporation using traversable wormhole protocols in AdS Jackiw-Teitelboim gravity with matter fields coupled to an external bath. By…
A teleportation protocol in Schwarzschild-de Sitter space
Sergio E. Aguilar-Gutierrez, Ricardo EspÃndola, Edward K. Morvan-Benhaim
We propose a new information transfer protocol for de Sitter space, using black holes as energy reservoirs. We consider antipodal observers in pure de Sitter space in the Bunch-Dav…
The centaur-algebra of observables
Sergio E. Aguilar-Gutierrez, Eyoab Bahiru, Ricardo EspÃndola
This letter explores a transition in the type of von Neumann algebra for asymptotically AdS spacetimes from the implementations of the different gravitational constraints. We denot…