Dark Energy From Fifth Dimension

TL;DR

This paper proposes a 5D modified gravity model where the fifth dimension manifests as dark energy, deriving a time-varying equation of state and fitting observational data.

Contribution

It introduces a novel 5D gravitational framework that explains dark energy as a geometric effect of the extra dimension, with parameters calibrated to observations.

Findings

Derived a time-varying dark energy equation of state

Matched model predictions with observational data

Provided a geometric interpretation of dark energy in 5D

Abstract

Observational evidence for the existence of dark energy is strong. Here we suggest a model which is based on a modified gravitational theory in 5D and interpret the 5th dimension as a manifestation of dark energy in the 4D observable universe. We also obtain an equation of state parameter which varies with time. Finally, we match our model with observations by choosing the free parameters of the model.