Published September 26, 1994 | Version v1
Journal article Metadata-only

Exact evolution equation for scalar electrodynamics

Creators

  • 1. DESY, Notkestrasse 85, D-22603 Hamburg (Germany)
  • 2. Institut fuer Theoretische Physik, Universitaet Heidelberg, Philosophenweg 16, D-69120 Heidelberg (Germany)

Description

We describe scalar quantum electrodynamics by a gauge-invariant effective average action Γk. This is obtained by integrating out the quantum fluctuations with ''momenta'' larger than k in a gauge-invariant way. Our method can deal successfully with the infrared problems of perturbation theory in less than four dimensions or at high temperature. The dependence of Γk on the infrared cutoff k is given by an exact evolution equation. ((orig.))

Additional details

Publishing Information

Journal Title
Nuclear Physics. B
Journal Volume
427
Journal Issue
1-2
Journal Page Range
p. 291-324.
ISSN
0550-3213
CODEN
NUPBBO

INIS

Country of Publication
Netherlands
Country of Input or Organization
Netherlands
INIS RN
26012630
Subject category
S72: PHYSICS OF ELEMENTARY PARTICLES AND FIELDS;
Descriptors DEI
ACTION INTEGRAL; DIFFERENTIAL EQUATIONS; GAUGE INVARIANCE; HIGGS MODEL; INFRARED DIVERGENCES; LAGRANGIAN FIELD THEORY; PERTURBATION THEORY; QUANTUM ELECTRODYNAMICS; SCALAR FIELDS; TEMPERATURE DEPENDENCE
Descriptors DEC
ELECTRODYNAMICS; EQUATIONS; FIELD THEORIES; INTEGRALS; INVARIANCE PRINCIPLES; MATHEMATICAL MODELS; PARTICLE MODELS; QUANTUM FIELD THEORY