Emergent Dark Gravity from (Non)Holographic Screens

TL;DR

This paper links Verlinde's emergent gravity in de Sitter space with holographic screen models, proposing a non-holographic scenario that explains dark gravity phenomena and baryonic relations at large scales.

Contribution

It introduces a modified non-holographic screen model where holography fails at large scales, providing a new framework for emergent dark gravity and baryonic relations.

Findings

Describes an emergent dark gravitational force scaling as 1/r.

Recovers the baryonic Tully-Fisher relation within the framework.

Proposes a violation of holography at large length-scales.

Abstract

In this work, a clear connection is made between E. Verlinde's recent theory of emergent gravity in de Sitter space and the earlier work that described emergent gravity using holographic screens. A modified (non)holographic screen scenario is presented, wherein the screen fails to encode an emergent mass in the bulk "unemerged" part of space for sufficiently large length-scales, where the volume-law of the non-holographic bulk degrees of freedom overtakes the area-law scaling of the entropy of the screen. Within this framework, we can describe both an emergent dark gravitational force, which scales like $\frac{1}{r}$, and also a version of the baryonic Tully-Fisher relation. We therefore recast these results within an emergent gravity framework in which there is an explicit violation of holography for sufficiently large length-scales.