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The firewall paradox is Wigner's friend paradox
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abstract
The firewall paradox, a puzzle in black hole physics, depends on an implicit assumption: a rule that allows the infalling and the outside observer to combine their perspectives. However, a recent extension of the Wigner's friend paradox shows that such a combination rule conflicts with quantum theory $\unicode{x2013}$ without involving gravity. This challenges the usual conclusion of the firewall paradox, that standard quantum gravity assumptions are incompatible. More generally, black hole puzzles and Wigner's friend puzzles are closely related by a correspondence. This suggests that the firewall paradox may be a symptom of the same fundamental issue that leads to the extended Wigner's friend paradox.
Forward citations
Cited by 3 Pith papers
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A Quantum Superposition of Black Hole Evaporation Histories: Recovering Unitarity
A controlled-squeezing toy model of black hole evaporation with quantum back-reaction is unitary, and the initial black hole state can be recovered from the final radiation.
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Events and their Localisation are Relative to a Lab
Events, their localisation, and even conclusions about indefinite causal order in the quantum switch are shown to depend on the choice of a Lab and its reference degrees of freedom.
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Intelligent qubits
Wigner's-friend and Frauchiger–Renner paradoxes are attributed to treating non-commuting quantum propositions as Boolean variables and to assuming observers can introspect their own states.
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