Low energy signatures of nonlocal field theories

Abstract

The response of inertial particle detectors coupled to a scalar field satisfying nonlocal dynamics described by nonanalytic functions of the d'Alembertian operator $\square$ is studied. We show that spontaneous emission processes of a low energy particle detector are very sensitive to high-energy nonlocality scales. This allows us to suggest a nuclear physics experiment ($\sim$ MeV energy scales) that outperforms the sensitivity of LHC experiments by many orders of magnitude. This may have implications for the falsifiability of theoretical proposals of quantum gravity.

5 pages, 1 figure. RevTeX 4.1. This version matches the published one in PRD Rapid Communications

References in corpus (5)

• Wavepacket detection with the Unruh-DeWitt model
• Generalized Causal Set d'Alembertians
• Predictions for Nongaussianity from Nonlocal Inflation
• Nonlocal Scalar Quantum Field Theory from Causal Sets
• Emergence of string-like physics from Lorentz invariance in loop quantum gravity

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