Dark energy as stimulated emission of gravitons from a background brane

Abstract

The idea that dark energy is gravitational waves may explain its strength and its time-evolution provided that the additional energy comes from a background. A possible concept is that dark energy is the ensemble of coherent bursts (solitons) of gravitational waves originally produced by stimulated emission when the first generation of super-massive black holes was formed. These solitons get their initial energy as well as keep up their energy density throughout the evolution of the universe by stimulating emission from a background brane. We model this process by working out this energy transfer in a Boltzmann equation approach. The transit of these gravitational wave solitons may be detectable. Key tests include pulsar timing, clock jitter and the radio and neutrino backgrounds.

arXiv comment7 pages, Title changed to more accurately reflect the content of the paper, a more detailed description of the stimulation process, effective equation of state clarified, typos fixed