New Observational Bounds to Quantum Gravity Signals

Abstract

We consider a new set of effects arising from the quantum gravity corrections to the propagation of fields, associated with fluctuations of the spacetime geometry. Using already existing experimental data, we can put bounds on these effects that are more stringent by several orders of magnitude than those expected to be obtained in astrophysical observations. In fact these results can be already interpreted as questioning the whole scenario of linear (in $l_P$) corrections to the dispersion relations for free fields in Lorentz violating theories.

Latex, to be published in PRL

References in corpus (4)

• Lorentz invariance with an invariant energy scale
• One-Loop Renormalization of Lorentz-Violating Electrodynamics
• Observational Limits on Quantum Geometry Effects
• Quantum gravity corrections to particle interactions

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