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Infrared problems in QED: Some topics of current research Dybalski, Wojciech
Description
(Joint work with A. Pizzo)
I will discuss some recent progress on infrared problems in non-perturbative approaches to
QED. First, I will explain the general distinction between the `infraparticleâ and `infravacuumâ picture
of the electron which pertains to the existence resp. non-existence of the spacelike asymptotic flux of
the electric field. On this basis the problem of electron-photon scattering will be discussed both in
models of non-relativistic QED and in the setting of algebraic QED.
On the infraparticle side, we will revisit the Faddeev-Kulish approach, theory of particle weights and
the problem of velocity superselection. On the infravacuum side the talk will cover Kraus-Polley-
Reents representations and the Buchholz-Roberts approach. If time allows, relations to a current trend
in high-energy physics triggered by the works of A. Strominger et al. on the Weinberg's soft-photon
theorems will be discussed.
Item Metadata
| Title |
Infrared problems in QED: Some topics of current research
|
| Creator | |
| Publisher |
Banff International Research Station for Mathematical Innovation and Discovery
|
| Date Issued |
2018-07-31T08:51
|
| Description |
(Joint work with A. Pizzo)
I will discuss some recent progress on infrared problems in non-perturbative approaches to QED. First, I will explain the general distinction between the `infraparticleâ and `infravacuumâ picture of the electron which pertains to the existence resp. non-existence of the spacelike asymptotic flux of the electric field. On this basis the problem of electron-photon scattering will be discussed both in models of non-relativistic QED and in the setting of algebraic QED. On the infraparticle side, we will revisit the Faddeev-Kulish approach, theory of particle weights and the problem of velocity superselection. On the infravacuum side the talk will cover Kraus-Polley- Reents representations and the Buchholz-Roberts approach. If time allows, relations to a current trend in high-energy physics triggered by the works of A. Strominger et al. on the Weinberg's soft-photon theorems will be discussed. |
| Extent |
53.0
|
| Subject | |
| Type | |
| File Format |
video/mp4
|
| Language |
eng
|
| Notes |
Author affiliation: Technical University Munich
|
| Series | |
| Date Available |
2019-03-14
|
| Provider |
Vancouver : University of British Columbia Library
|
| Rights |
Attribution-NonCommercial-NoDerivatives 4.0 International
|
| DOI |
10.14288/1.0376882
|
| URI | |
| Affiliation | |
| Peer Review Status |
Unreviewed
|
| Scholarly Level |
Postdoctoral
|
| Rights URI | |
| Aggregated Source Repository |
DSpace
|
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Rights
Attribution-NonCommercial-NoDerivatives 4.0 International