Dressed infrared quantum information
High Energy Physics - Theory
2018-01-17 v1 General Relativity and Quantum Cosmology
Quantum Physics
Abstract
We study information-theoretic aspects of the infrared sector of quantum electrodynamics, using the dressed-state approach pioneered by Chung, Kibble, Faddeev-Kulish and others. In this formalism QED has an IR-finite S-matrix describing the scattering of electrons dressed by coherent states of photons. We show that measurements sensitive only to the outgoing electronic degrees of freedom will experience decoherence in the electron momentum basis due to unobservable photons in the dressing. We make some comments on possible refinements of the dressed-state formalism, and how these considerations relate to the black hole information paradox.
Keywords
Cite
@article{arxiv.1710.02531,
title = {Dressed infrared quantum information},
author = {Daniel Carney and Laurent Chaurette and Dominik Neuenfeld and Gordon Walter Semenoff},
journal= {arXiv preprint arXiv:1710.02531},
year = {2018}
}
Comments
5 pages, 1 figure