POWER COUNTING DEGREE VS. SINGULAR ORDER IN THE SCHWINGER MODEL

Authors
ASTE A SCHARF G WALTHER U
Citation
A. Aste et al., POWER COUNTING DEGREE VS. SINGULAR ORDER IN THE SCHWINGER MODEL, Nuovo cimento della Società Italiana di Fisica. A. Nuclei, particles and fields, 111(3), 1998, pp. 323-327
Citations number
4
Categorie Soggetti
Physics, Particles & Fields
Journal title
Nuovo cimento della Società Italiana di Fisica. A. Nuclei, particles and fields → ACNP
ISSN journal
11241861
Volume
111
Issue
3
Year of publication
1998
Pages
323 - 327
Database
ISI
SICI code
1124-1861(1998)111:3<323:PCDVSO>2.0.ZU;2-X
Abstract
The importance of a rigorous definition of the singular degree of a di stribution is demonstrated in the case of two-dimensional QED (Schwing er model). Correct mathematical treatment of second-order vacuum polar ization in the perturbative approach is crucial in order to obtain the Schwinger mass of the photon by resummation.