9 papers
Uniqueness of null-local modular flow
Gautam Satishchandran, Jonathan Sorce
In arXiv:2306.01837, it was conjectured that one can engineer a large class of quantum field theory states for which the modular flow on a spacelike slice is "instantaneously local…
Generalized Entropy is von Neumann Entropy II: The complete symmetry group and edge modes
Marc S. Klinger, Jonah Kudler-Flam, Gautam Satishchandran
We consider the algebra of observables of perturbative quantum gravity in the exterior of a stationary black hole or the static patch of de Sitter spacetime. It was previously argu…
Horizons and Soft Quantum Information
Daine L. Danielson, Gautam Satishchandran
It was recently shown that black holes decohere any quantum superpositions in their vicinity. This decoherence is mediated by soft radiation through the horizon, and can be underst…
Black Holes, Entanglement and Decoherence
Gautam Satishchandran
It was recently shown that a black hole (or any Killing horizon) will decohere any quantum superposition in their vicinity. I review three distinct but equivalent arguments that il…
Local Description of Decoherence of Quantum Superpositions by Black Holes and Other Bodies
Daine L. Danielson, Gautam Satishchandran, Robert M. Wald
It was previously shown that if an experimenter, Alice, puts a massive or charged body in a quantum spatial superposition, then the presence of a black hole (or more generally any…
How to Minimize the Decoherence Caused by Black Holes
Daine L. Danielson, Jonah Kudler-Flam, Gautam Satishchandran +1
We consider an experimentalist, Alice, who creates a quantum superposition of a charged or massive body outside of a black hole (or, more generally, in the presence of a Killing ho…