Entropic Accelerating Universe

TL;DR

This paper proposes that the universe's accelerated expansion can be explained by an entropic force arising from the entropy and information stored on the cosmic horizon, eliminating the need for dark energy.

Contribution

It introduces a novel entropic interpretation of cosmic acceleration based on horizon entropy, challenging the standard dark energy paradigm.

Findings

Entropic force can account for acceleration without dark energy

Horizon entropy influences universe dynamics

Supports entropic gravity as an alternative explanation

Abstract

To accommodate the observed accelerated expansion of the universe, one popular idea is to invoke a driving term in the Friedmann-Lemaitre equation of dark energy which must then comprise 70% of the present cosmological energy density. We propose an alternative interpretation which takes into account the entropy and temperature intrinsic to the horizon of the universe due to the information holographically stored there. Dark energy is thereby obviated and the acceleration is due to an entropic force naturally arising from the information storage on the horizon surface screen. We consider an additional quantitative approach inspired by surface terms in general relativity and show that this leads to the entropic accelerating universe.