4 citations · 6 across the 7 of their papers we have counts for
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Anti-scrambling and euclidean folds from observer correlators in de Sitter space
Daniel Harlow, Ying Zhao
The de Sitter horizon behaves in a qualitatively different way from a black hole horizon, which poses a challenge to any attempt to develop a fundamental quantum description of de…
Observers, -parameters, and the Hartle-Hawking state
Daniel Harlow
In this paper we extend recent ideas about observers and closed universes to theories where observers can be fluctuated into existence in the Hartle-Hawking state. This introduces…
Disjoint additivity and local quantum physics
Daniel Harlow, Shu-Heng Shao, Jonathan Sorce +1
Quantum systems of physical interest are often local, but there are at least three competing perspectives on how "locality" should be formalized: an algebraic framework, a path-int…
Observer complementarity for black holes and holography
Netta Engelhardt, Elliott Gesteau, Daniel Harlow
We present a mathematical formulation of black hole complementarity based on recent rules for including the observer in quantum cosmology. We argue that this provides a self-consis…
Quantum mechanics and observers for gravity in a closed universe
Daniel Harlow, Mykhaylo Usatyuk, Ying Zhao
Recent arguments based on the quantum extremal surface formula or the gravitational path integral have given fairly compelling evidence that the Hilbert space of quantum gravity in…
Phase space of Jackiw-Teitelboim gravity with positive cosmological constant
Elba Alonso-Monsalve, Daniel Harlow, Patrick Jefferson
In this paper we construct the classical phase space of Jackiw-Teitelboim gravity with positive cosmological constant on spatial slices with circle topology. This turns out to be s…
Gauging spacetime inversions in quantum gravity
Daniel Harlow, Tokiro Numasawa
Spacetime inversion symmetries such as parity and time reversal play a central role in physics, but they are usually treated as global symmetries. In quantum gravity there are no g…