TL;DR
This paper proposes a modified brane cosmology model incorporating an f(R) term to achieve ghost-free self-acceleration, providing stable de Sitter solutions and addressing issues in previous DGP models.
Contribution
It introduces an f(R) modification to the normal DGP brane model to enable stable, ghost-free self-acceleration in cosmology.
Findings
Derived de Sitter self-accelerating solutions.
Analyzed stability under homogeneous perturbations.
Addressed ghost issues in DGP models.
Abstract
Despite the nice features of the Dvali, Gabadadze and Porrati (DGP) model to explain the late-time acceleration of the universe, it suffers from some theoretical problems like the ghost issue. We present a way to self-accelerate the normal DGP branch, which is known to be free of the ghost problem, by means of an f(R) term on the brane action. We obtain the de Sitter self-accelerating solutions of the model and study their stability under homogeneous perturbations.
Peer Reviews
No public reviews on file for this paper yet. If you reviewed it on a platform where reviews are public (OpenReview, ICLR, NeurIPS, ICML), you can paste yours below so the community can read it here.
Videos
No videos yet. Explain this paper in a talk, walkthrough, or lecture? Add one.