A theory of quantum gravity based on quantum computation

TL;DR

This paper introduces a novel quantum gravity theory that models space-time as an emergent construct from quantum computation, linking quantum information processing with gravitational phenomena.

Contribution

It presents a unified framework where quantum computation underpins the geometry of space-time and reproduces key gravitational phenomena.

Findings

Derives space-time geometry from quantum information processing.

Predicts back-reaction effects of matter on the metric.

Models black-hole evaporation and holography within the framework.

Abstract

This paper proposes a method of unifying quantum mechanics and gravity based on quantum computation. In this theory, fundamental processes are described in terms of pairwise interactions between quantum degrees of freedom. The geometry of space-time is a construct, derived from the underlying quantum information processing. The computation gives rise to a superposition of four-dimensional spacetimes, each of which obeys the Einstein-Regge equations. The theory makes explicit predictions for the back-reaction of the metric to computational `matter,' black-hole evaporation, holography, and quantum cosmology.