More on ghosts in DGP model
Dec, 2005Citations per year
Abstract:
It is shown by an explicit calculation that the excitations about the self-accelerating cosmological solution of the Dvali--Gabadaze--Porrati model contain a ghost mode. This raises serious doubts about viability of this solution. Our analysis reveals the similarity between the quadratic theory for the perturbations around the self-accelerating Universe and an Abelian gauge model with two Stueckelberg fields.- 04.50.+h
- 11.10.Ef
- general relativity
- matter: coupling
- dimension: 5
- ghost
- acceleration
- cosmological model
- Dvali-Gabadadze-Porrati model
- gauge field theory: abelian
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