Cosmological Acceleration from Virtual Gravitons

Abstract

Intrinsic properties of the space itself and quantum fluctuations of its geometry are sufficient to provide a mechanism for the acceleration of cosmological expansion (dark energy effect). Applying Bogoliubov-Born-Green-Kirkwood-Yvon hierarchy approach to self-consistent equations of one-loop quantum gravity, we found exact solutions that yield acceleration. The permanent creation and annihilation of virtual gravitons is not in exact balance because of the expansion of the Universe. The excess energy comes from the spontaneous process of graviton creation and is trapped by the background. It provides the macroscopic quantum effect of cosmic acceleration.

6 pages, REVTeX 4

References in corpus (2)

• Top ten accelerating cosmological models
• Cosmological zoo -- accelerating models with dark energy

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• Inflation and CMB Anisotropy from Quantum Metric Fluctuations
• Dark Energy and Inflation from Gravitational Waves
• Cosmological Acceleration from Scalar Field and Classical and Quantum Gravitational Waves (Dark Energy and Inflation)