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Introduction of Anomalous Green Functions into Quantum Chromodynamics
Author(s) -
Herrmann J.
Publication year - 1988
Publication title -
annalen der physik
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.009
H-Index - 68
eISSN - 1521-3889
pISSN - 0003-3804
DOI - 10.1002/andp.19885000606
Subject(s) - physics , feynman diagram , quantum chromodynamics , formalism (music) , quantum field theory , gluon , superconductivity , quantum , thermal quantum field theory , quantum electrodynamics , quantum mechanics , theoretical physics , quantum gravity , art , musical , visual arts
The nonperturbative vacuum structure of Quantum Chromodynamic is studied with the help of a generalization of the formalism of Green functions which corresponds to the method of Gorkov and Nambu in the theory of superconductivity. Taking into account the existence of gluon condensation the selfenergy of the gluon‐quasi‐particles is calculated with the help of modified rules for Feynman diagrams. The resulting integral equations for the effective field parameters contain particular solutions with an energy gap in the spectrum of the quasi‐particles and a phase transition at a critical momentum.