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Nonperturbative behavior in 3-dimensional QED

journal contribution
posted on 2023-05-17, 23:51 authored by Waites, AB, Robert DelbourgoRobert Delbourgo
Infrared singularities in QED3 can be avoided by including at least one massless source which couples to the photon. Once that is arranged it is possible to obtain nonzeromass solutions for the source Green functions in scalar and (doubled) spinor electrodynamics, by using the gauge technique. We find that the asymptotic results for the source spectral ρ functions are typically ρ(p)≃(p2−m2)−1−e2/cπ2 as p→m, and ρ(p)≃p−2exp(c′e2/πp) as p→∞. The constants c and c′ are respectively related to the number of charged massless particles and their “spin” character.

History

Publication title

International Journal of Modern Physics A

Volume

7

Issue

27

Pagination

6857-6872

ISSN

0217-751X

Department/School

School of Natural Sciences

Publisher

World Scientific Publ Co Pte Ltd

Place of publication

Singapore

Repository Status

  • Restricted

Socio-economic Objectives

Expanding knowledge in the physical sciences

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