摘要:

AbstractThe infra‐red asymptotic behaviour of the physical charged sectors of quantum electrodynamics is investigated. Properly defined locally gauge‐invariant charged fields (nonlocal with respect to the electromagnetic field and different, in nature, from the string variables) are found to have vanishing infra‐red anomalous dimension. The corresponding Lehman‐Symanzik‐Zimmermann limits admit a Fock representation and the Poincaré group is implementable on the asymptotic physical Hubert spaces. The scattering matrix is the well known one, but for the fact it admits a representation in which the usual logarithms of the “vanishing photon mass” are substituted by the logarithms of a finite mass scale. The latter is furtherly replaced by the finite energy resolution of the measuring apparatus when cross sections are computed according to the prescription of Bloch

ISSN:0015-8208    

DOI:10.1002/prop.19840320902

出版商:WILEY‐VCH Verlag    

年代:1984

数据来源: WILEY

摘要:

AbstractThe properties of Maxwell type equations and the related problem of approximation of physical charged states are studied in the framework of axiomatic gauge quantum field theory. The charge operator and the physical charged sectors of quantum electrodynamics are constructed under a set of hypotheses which can be verified in perturbation theory and are supported by some nonperturbative arguments.

ISSN:0015-8208    

DOI:10.1002/prop.19840320903

出版商:WILEY‐VCH Verlag    

年代:1984

数据来源: WILEY

ISSN:0015-8208    

DOI:10.1002/prop.19840320901

出版商:WILEY‐VCH Verlag    

年代:1984

数据来源: WILEY