Dressed infrared quantum information

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.

5 pages, 1 figure

References in corpus (9)

• Soft Hair on Black Holes
• Superrotation Charge and Supertranslation Hair on Black Holes
• Infrared Divergences in QED, Revisited
• Shaving off Black Hole Soft Hair
• Soft Hair as a Soft Wig
• Construction of an asymptotic S matrix for perturbative quantum gravity
• Large Gauge Symmetries and Asymptotic States in QED
• Infrared quantum information
• From Faddeev-Kulish to LSZ. Towards a non-perturbative description of colliding electrons

Cited by in corpus (30)

• BMS Supertranslation Symmetry Implies Faddeev-Kulish Amplitudes
• Killing Horizons Decohere Quantum Superpositions
• On the need for soft dressing
• Soft Hair of Dynamical Black Hole and Hawking Radiation
• Comments on Lorentz Transformations, Dressed Asymptotic States and Hawking Radiation
• Branches of the Black Hole Wave Function Need Not Contain Firewalls
• Subleading soft dressings of asymptotic states in QED and perturbative quantum gravity
• Infrared Divergences and Quantum Coherence
• On Entropy Growth in Perturbative Scattering
• IR dynamics and entanglement entropy
• Infrared finite scattering theory: Scattering states and representations of the BMS group
• Infrared finite scattering theory: Amplitudes and soft theorems
• A functional approach to soft graviton scattering and BMS charges
• Theory of Phonon-Assisted Adsorption in Graphene: Many-Body Infrared Dynamics
• Infrared dressing in real time: emergence of anomalous dimensions
• Next-to-eikonal corrected double graviton dressing and gravitational wave observables at $\mathcal{O}(G^2)$
• Spin correlations and Bell nonlocality in $\Lambda \bar{\Lambda }$ pair production from $e^{+}{e}^{-}$ collisions with a thrust cut
• Dressed-Asymptotic States and QED Infrared Physics
• Entangled Scent of a Charge
• Dress code for infrared safe scattering in QED
• Soft photon radiation and entanglement
• Quantum gravity tomography
• AdS Asymptotic Symmetries from CFT Mirrors
• Soft Scalars don't decouple
• Matter-gravity entanglement entropy and the second law for black holes
• On the infrared divergence and global colour in N=4 Yang-Mills theory
• Infrared Finite Scattering Theory in Quantum Field Theory and Quantum Gravity
• Threshold and infrared singularities: time evolution, asymptotic state and entanglement entropy
• Gauge Invariant Propagators and States in Quantum Electrodynamics
• Subleading soft radiation during scattering of dressed states in QED