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Observational Signatures of Quantum Gravity in Interferometers
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Observational Signatures of Quantum Gravity in Interferometers
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We consider the uncertainty in the arm length of an interferometer due to metric fluctuations from the quantum nature of gravity, proposing a concrete microscopic model of energy fluctuations in holographic degrees of freedom on the surface bounding a causally connected region of spacetime. In our model, fluctuations longitudinal to the beam direction accumulate in the infrared and feature strong long distance correlation in the transverse direction. This leads to a signal that could be observed in a gravitational wave interferometer. We connect the positional uncertainty principle arising from our calculations to the 't Hooft gravitational S-matrix.
Forward citations
Cited by 12 Pith papers
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An operator-algebraic quantization of the characteristic initial-value problem yields a candidate on-shell algebra for a gravitational subregion bounded by two null hypersurfaces.
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Falling through the horizon of a quantum black hole
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Large Quantum Gravity Fluctuations of BTZ Black Holes
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From Asymptotically Flat Gravity to Finite Causal Diamonds
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Quantum Fluctuations of the Black Hole Horizon
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Response of interferometers to the vacuum of quantum gravity
Standard low-energy quantum gravity via effective graviton QFT predicts interferometer length variations of order the Planck length (~10^{-35} m), with no divergences indicating breakdown.
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