# Degravitation and the Cascading DGP Model

## TL;DR

This paper analyzes the 6D Cascading DGP braneworld model, demonstrating how de Sitter solutions on the brane can be derived without assuming a flat bulk, advancing understanding of degravitation mechanisms.

## Contribution

It provides a new derivation of de Sitter solutions in the 6D Cascading DGP model without assuming a flat bulk, using a specific subset of bulk equations.

## Key findings

- De Sitter solutions derived without flat bulk assumption
- Solutions obtained via solving bulk equations rather than imposing conditions
- Supports the model's potential for degravitation of vacuum energy

## Abstract

We consider the 6D Cascading DGP model, a braneworld model which is a promising candidate to realize the phenomenon of the degravitation of vacuum energy. Focusing on a recently proposed thin limit description of the model, we study solutions where the induced metric on the codimension-2 brane is of the de Sitter form. While these solutions have already been recovered in the literature imposing by hand the bulk to be flat, we show that it is possible to derive them without making this assumption, by solving a suitably chosen subset of the bulk equations.