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 Stückelberg fields
| Original language | English |
|---|---|
| Pages (from-to) | 044016 |
| Number of pages | 1 |
| Journal | Physical Review D |
| Volume | 73 |
| Issue number | 4 |
| DOIs | |
| Publication status | Published - 14 Feb 2006 |