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Title Cosmological dynamics of a bulk scalar field in the DGP setup
Type JournalPaper
Keywords Braneworld cosmology · Induced gravity · Bulk scalar field · Phantom-like behavior
Abstract We reconsider the issue of cosmological dynamics in a DGP setup with a bulk scalar field. The ghost-free, normal branch of this DGP-inspired braneworld scenario has the potential to realize a self-consistent phantom-like behavior. The roles played by the bulk canonical scalar field on this phantom-like dynamics are explored. Within a dynamical system approach, the effective phantom nature of the scenario is investigated with details. This analysis shows that there is a stable, late-time de Sitter phase.
Researchers Narges Rashidi Talouki (Second Researcher), Kourosh Nozari (First Researcher)