Entanglement and the Infrared

TL;DR

This paper discusses the infrared problems in quantum electrodynamics and gravity, their implications for information loss, and how different approaches to these issues are fundamentally distinguishable by experiments.

Contribution

It highlights that two common solutions to infrared divergences in QED and gravity are fundamentally different and experimentally distinguishable.

Findings

Infrared divergences relate to soft photon and graviton production.

Different quantization methods for electrodynamics and gravity are proposed.

Experimental distinguishability of the two approaches is argued.

Abstract

We shall outline some results regarding the infrared catastrophes of quantum electrodynamics and perturbative quantum gravity and their implications for information loss in quantum processes involving electrically or gravitationally charged particles. We will argue that two common approaches to the solution of the infrared problem, using transition probabilities which are inclusive of copious soft photon and graviton production and using dressed states describe fundamentally different quantizations of electrodynamics and low energy gravity which are, in principle, distinguishable by experiments.