83 citations · 197 across the 10 of their papers we have counts for
10 papers
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…
Euclidean wormholes stability analysis revisited
Donald Marolf, Bruno Missoni
Previous studies of linearized stability of asymptotically flat Euclidean axion wormholes found that symmetric modes suffered from divergences. We show that such divergences were a…
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 Euclid…
Looking at extremal black holes from very far away
Maciej Kolanowski, Donald Marolf, Ilija Rakic +2
Near-extremal black holes are subject to large quantum effects, which modify their low-temperature thermodynamic behavior. Hitherto, these quantum effects were analyzed by separati…
Null states and time evolution in a toy model of black hole dynamics
Xi Dong, Maciej Kolanowski, Xiaoyi Liu +2
Spacetime wormholes can provide non-perturbative contributions to the gravitational path integral that make the actual number of states in a gravitational system much smaller…
Stability of saddles and choices of contour in the Euclidean path integral for linearized gravity: Dependence on the DeWitt Parameter
Xiaoyi Liu, Donald Marolf, Jorge E. Santos
Due to the conformal factor problem, the definition of the Euclidean gravitational path integral requires a non-trivial choice of contour. The present work examines a generalizatio…
Path Integrals and Instantons in Quantum Gravity
Donald Marolf
While there does not at this time exist a complete canonical theory of full 3+1 quantum gravity, there does appear to be a satisfactory canonical quantization of minisuperspace mod…
On Relativistic Material Reference Systems
J. David Brown, Donald Marolf
This work closes certain gaps in the literature on material reference systems in general relativity. It is shown that perfect fluids are a special case of DeWitt's relativistic ela…
Conservation Laws in the Quantum Mechanics of Closed Systems
James B. Hartle, Raymond Laflamme, Donald Marolf
We investigate conservation laws in the quantum mechanics of closed systems. We review an argument showing that exact decoherence implies the exact conservation of quantities that…
Models of Particle Detection in Regions of Spacetime
Donald Marolf
We investigate two models of measuring devices designed to detect a non-relativistic free particle in a given region of spacetime. These models predict different probabilities for…