Comments on the Hartle-Hawking State and Observers
48:22Holographic Algebras at Null Infinity
53:26Exact Semiclassical Gravity and Partial Cauchy Slice Holography
43:04Bouncing off Stringy Singularities
40:49Comments on the de Sitter Double Cone
42:30An Observer's Measure of De Sitter Entropy
45:10Quantum Mechanics of the Hartle-Hawking State
46:44The Hartle-Hawking Wavefunction and de Sitter Black Holes
43:04The Yes Boundaries Wavefunctions of the Universe and Late Time Cosmology
45:02On the Phase of the de Sitter Density of States
44:06Quantum Cosmology in the BKL Regime and Dual Primon Gases
44:24Relational Perspectives in Quantum Gravity: The Role of Quantum Reference Frames
44:55TQFT Gravity and Sum over Topologies
44:10Failures of Spacetime Emergence
45:26On the Hilbert Space of Quantum Gravity from the Gravitational Path Integral
49:11Emergent Mixed States for Baby Universes and Black Holes
40:51“Filtering'' CFTs at large N: Euclidean Wormholes, Closed Universes, and Black Hole Interiors
46:34Near-Extremal Black Hole Evaporation
40:43A Black Hole Airy Tail: Part 2
41:33The Hartle-Hawking Wavefunction and de Sitter Black Holes
This lecture explores the Hartle-Hawking wavefunction in Schwarzschild-de Sitter spacetime, comparing its semiclassical norm to the Euclidean Nariai geometry action. It clarifies quantum corrections and the path integral phase.
Workshop on Quantum Aspects of Black Holes and Spacetime
Quantum Mechanics of the Hartle-Hawking State
Next · Lecture 9The Yes Boundaries Wavefunctions of the Universe and Late Time Cosmology