# Normal DGP in varying speed of light cosmology

## TL;DR

This paper explores how the normal branch of the DGP brane world model, combined with a varying speed of light, can explain cosmic acceleration and shows slight deviations from the standard CDM model.

## Contribution

It introduces a novel combination of VSL cosmology with the normal DGP model, demonstrating self-acceleration without dark energy.

## Key findings

- Normal DGP in VSL leads to self-acceleration.
- Results slightly deviate from CDM model.
- Model explains cosmic acceleration without dark energy.

## Abstract

The varying speed of light (VSL) has been used in cosmological models in which the physical constants vary over time. On the other hand, the Dvali, Gabadadze and Porrati (DGP) brane world model, especially its normal branch has been extensively discussed to justify the current cosmic acceleration. In this article we show that the normal branch of DGP in VSL cosmology leads to a self-accelerating behavior and therefore can interpret cosmic acceleration. Applying statefinder diagnostics demonstrate that our result slightly deviates {\Lambda}CDM model.