Graviton bremsstrahlung produces a decoherence rate in mass superpositions that scales with spatial separation, mass, and gravitational coupling, furnishing a quantum-field-theory basis for collapse models.
Sourcing semiclassical gravity from spontaneously localized quantum matter
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Postquantum classical gravity requires stochastic spacetime fluctuations consisting of a diffusing spin-2 field and spin-0 scalar whose noise is constrained by LISA Pathfinder and decoherence bounds.
Collapse-based models of gravity are shown to be nonlocal, thereby preserving the validity of the entanglement-based witness for the non-classicality of gravity.
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Microscopic Origins of Collapse Models: Decoherence from Graviton Bremsstrahlung
Graviton bremsstrahlung produces a decoherence rate in mass superpositions that scales with spatial separation, mass, and gravitational coupling, furnishing a quantum-field-theory basis for collapse models.
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Stochastic modes in postquantum classical gravity
Postquantum classical gravity requires stochastic spacetime fluctuations consisting of a diffusing spin-2 field and spin-0 scalar whose noise is constrained by LISA Pathfinder and decoherence bounds.
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Collapse-based models for gravity do not violate the entanglement-based witness of non-classicality
Collapse-based models of gravity are shown to be nonlocal, thereby preserving the validity of the entanglement-based witness for the non-classicality of gravity.