Smooth Initial Conditions from Weak Gravity

TL;DR

This paper proposes a mechanism to naturally explain the early universe's smoothness by weakening gravity in its initial moments, altering initial conditions and low entropy states.

Contribution

It introduces a novel approach of weakening gravity at early times to account for the universe's smooth initial conditions.

Findings

Weakening gravity leads to naturally smooth initial conditions.

The mechanism alters the entropy landscape of the early universe.

Potential implications for cosmological models and initial state assumptions.

Abstract

CMB measurements reveal an unnaturally smooth early universe. We propose a mechanism to make this smoothness natural by weakening the strength of gravity at early times, and therefore altering which initial conditions have low entropy.