3 papers
hep-th2025
Are wormholes generic with large sources?
Xiaoyi Liu, Donald Marolf, Jorge E. Santos
Euclidean path integrals can be used to prepare states of a Lorentzian QFT. So long as any sources are turned off on the surface, the resulting Lorentzian states all belong t…
gr-qc2025
Ill-posedness of the Cauchy problem for linearized gravity in a cavity with conformal boundary conditions
Xiaoyi Liu, Harvey S. Reall, Jorge E. Santos +1
We consider Lorentzian General Relativity in a cavity with a timelike boundary, with conformal boundary conditions and also a generalization of these boundary conditions. We focus…
hep-th2025
Euclidean and complex geometries from real-time computations of gravitational Rényi entropies
Jesse Held, Xiaoyi Liu, Donald Marolf +1
Gravitational Rényi computations have traditionally been described in the language of Euclidean path integrals. In the semiclassical limit, such calculations are governed by Eucli…