Tests of Quantum Gravity near Measurement Events

Abstract

Experiments have recently been proposed testing whether quantum gravitational interactions generate entanglement between adjacent masses in position superposition states. We propose potentially less challenging experiments that test quantum gravity against theories with classical space-times defined by postulating semi-classical gravity (or classical effects of similar scale) for mesoscopic systems.

arXiv commentSmall typos corrected and clarifications added

References in corpus (21)

• A Spin Entanglement Witness for Quantum Gravity
• Gravitationally-induced entanglement between two massive particles is sufficient evidence of quantum effects in gravity
• Does backreaction enforce the averaged null energy condition in semiclassical gravity?
• Tabletop experiments for quantum gravity: a user's manual
• Locality & Entanglement in Table-Top Testing of the Quantum Nature of Linearized Gravity
• Underground test of gravity-related wave function collapse
• Sourcing semiclassical gravity from spontaneously localized quantum matter
• Backreaction in Semiclassical Cosmolgy: The Einstein Langevin Equation
• Stochastic semiclassical gravity
• Why Eppley and Hannah's Experiment Isn't
• Measurement Analysis and Quantum Gravity
• Space-like Separation in a Bell Test assuming Gravitationally Induced Collapses
• Nonlinearity without Superluminality
• Causal Quantum Theory and the Collapse Locality Loophole
• Space QUEST mission proposal: Experimentally testing decoherence due to gravity
• Fluctuations of Energy Density and Validity of Semiclassical Gravity
• Breaking quantum linearity: constraints from human perception and cosmological implications
• Simple Refutation of the Eppley-Hannah argument
• Consistency of Semiclassical Gravity
• Stronger Tests of the Collapse Locality Loophole in Bell Experiments
• Perception Constraints on Mass-Dependent Spontaneous Localization

Cited by in corpus (9)

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• Tabletop Experiments for Quantum Gravity Are Also Tests of the Interpretation of Quantum Mechanics
• The measurement postulates of quantum mechanics are not redundant
• Does Quantum Mechanics Breed Larger, More Intricate Quantum Theories? The Case for Experience-Centric Quantum Theory and the Interactome of Quantum Theories
• Fundamental Physics, Existential Risks and Human Futures
• The thermodynamics of readout devices and semiclassical gravity
• Probing the Quantum Nature of Gravity in the Microgravity of Space