246 citations
- European Organization for Nuclear ResearchCH2 papers
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4 papers · 1 filter
Infrared behaviour of the ghost-gluon vertex in Landau gauge Yang-Mills theory
Wolfgang Schleifenbaum, Axel Maas, Jochen Wambach +1
A semi-perturbative calculation of the ghost-gluon vertex in Landau gauge Yang-Mills theory in four and three Euclidean space-time dimensions is presented. Non-perturbative gluon a…
Anharmonic O(N) oscillator model in next-to-leading order of the 1/N expansion
Alan Dzhioev, J. Wambach, A. Vdovin +1
An extended Holstein-Primakoff mapping which incorporates both single- and double boson mappings is used in the context of O(N+1) anharmonic oscillator with the global symmetry bro…
Gauge checks, consistency of approximation schemes and numerical evaluation of realistic scattering amplitudes
Christian Schwinn
We discuss both theoretical tools to verify gauge invariance in numerical calculations of cross sections and the consistency of approximation schemes used in realistic calculations…
Forests, Groves and Higgs Bosons: Gauge Invariance Classes in Spontaneously Broken Gauge Theories
T. Ohl, C. Schwinn
We determine the gauge invariance classes of tree level Feynman diagrams in spontaneously broken gauge theories, providing a proof for the formalism of gauge and flavor flips. We f…