Dynamical Casimir effect for gravitons in bouncing braneworlds
Apr, 2007Citations per year
Abstract: (arXiv)
We consider a 2-brane system in a 5 dimensional Anti-de Sitter spacetime. We study particle creation due to the motion of the physical brane which first approaches the second static brane (contraction) and then recedes from it (expansion). We calculate the spectrum and the energy density of the generated gravitons. We show that the massless gravitons have a blue spectrum and that their energy density satisfies the nucleosynthesis bound with very mild constraints on the parameters. We also show that the Kaluza-Klein modes cannot provide the dark matter in an Anti-de-Sitter braneworld. However, for natural choices of parameters, back reaction from the KK-gravitons may well become important.- 04.50.+h
- 98.80.Cq
- 11.10.Kk
- space-time: anti-de Sitter
- dimension: 5
- membrane model
- effect: Casimir
- graviton: power spectrum
- graviton: Kaluza-Klein
- graviton: zero mode
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