CAUSAL PHASE IN QED(3)

Authors
BOLDO JL PIMENTEL BM TOMAZELLI JL
Citation
Jl. Boldo et al., CAUSAL PHASE IN QED(3), International journal of theoretical physics, 36(7), 1997, pp. 1565-1574
Citations number
4
Categorie Soggetti
Physics
Journal title
International journal of theoretical physics → ACNP
ISSN journal
00207748
Volume
36
Issue
7
Year of publication
1997
Pages
1565 - 1574
Database
ISI
SICI code
0020-7748(1997)36:7<1565:CPIQ>2.0.ZU;2-W
Abstract
The operator S in Fock space which describes the scattering and partic le production processes in an external time-dependent electromagnetic potential A can be constructed from the one-particle 5-matrix up to a physical phase lambda[A]. In this work we determine this phase for QED in (2 + 1) dimensions by means of causality and show that no ultravio let divergences arise, in contrast to the usual formalism of QED(3).