Action in the Entropic Revolution of Newtonian Gravity

TL;DR

This paper reviews the recent shift in gravity theory, viewing it as an entropic effect rather than a fundamental force, and explores a general action framework for Verlinde's entropic gravity model.

Contribution

It introduces a general action approach to Verlinde's entropic gravity theory, expanding on prior work and discussing open problems and future directions.

Findings

Gravity can be modeled as an entropic force.

A general action framework for Verlinde's theory is proposed.

Open problems and future research directions are identified.

Abstract

The theory of gravity has undergone somewhat of a revolution lately. Gravity is no longer a fundamental force it seems, but rather an effect of holographic entropy. Building on the works by Jacobsson, Padmanabhan and Verlinde we review the concept of Newtonian gravity as an entropic force and discuss a possible general action approach to Verlinde's theory. We also discuss some open problems and future prospects of Verlinde's approach.