The Big Bang as the Ultimate Traffic Jam

TL;DR

This paper proposes a novel quantum gravity model where the Big Bang is described as a zero-entropy, jammed state in a complex state space, offering new insights into the universe's initial conditions and evolution.

Contribution

It introduces a background independent quantum gravity framework using a non-linear Grassmannian with a Fubini--Study-like metric, modeling the Big Bang as a jamming transition.

Findings

Big Bang modeled as a zero-entropy jammed state

Unjamming could explain cosmic inflation

Rejamming may correspond to a Big Crunch

Abstract

We present a novel solution to the nature and formation of the initial state of the Universe. It derives from the physics of a generally covariant extension of Matrix theory. We focus on the dynamical state space of this background independent quantum theory of gravity and matter, an infinite dimensional, complex non-linear Grassmannian. When this space is endowed with a Fubini--Study-like metric, the associated geodesic distance between any two of its points is zero. This striking mathematical result translates into a physical description of a hot, zero entropy Big Bang. The latter is then seen as a far from equilibrium, large fluctuation driven, metastable ordered transition, a ``freezing by heating'' jamming transition. Moreover, the subsequent unjamming transition could provide a mechanism for inflation while rejamming may model a Big Crunch, the final state of gravitational collapse.