Large quantum gravity effects and nonlocal variables

Abstract

We reconsider here the model where large quantum gravity effects were first found, but now in its Null Surface Formulation (NSF). We find that although the set of coherent states for $Z$, the basic variable of NSF, is as restricted as it is the one for the metric, while some type of small deviations from these states may cause huge fluctuations on the metric, the corresponding fluctuations on $Z$ remain small.

4 pages, accepted in PRD

Cited by in corpus (10)

• Microcausality and Quantum Cylindrical Gravitational Waves
• Null surfaces formulation in 3D
• Large quantum gravity effects: Cylindrical waves in four dimensions
• The Paradox of Virtual Dipoles in the Einstein Action
• Large "Dipolar" Vacuum Fluctuations in Quantum Gravity
• Observable effect of quantized cylindrical gravitational waves
• Quantum Einstein-Rosen waves: Coherent states and n-point functions
• Asymptotics of Regulated Field Commutators for Einstein-Rosen Waves
• Particles and vacuum for perturbative and non-perturbative Einstein-Rosen gravity
• Plane waves in quantum gravity: breakdown of the classical spacetime