Action in the Entropic Revolution of Newtonian Gravity

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.Comment: 7 pages, Essay written for the Gravity Research Foundation 2010 Awards for Essays on Gravitation