Introduction of Anomalous Green Functions into Quantum Chromodynamics
β Scribed by Dr. J. Herrmann
- Publisher
- John Wiley and Sons
- Year
- 1988
- Tongue
- English
- Weight
- 454 KB
- Volume
- 500
- Category
- Article
- ISSN
- 0003-3804
No coin nor oath required. For personal study only.
β¦ Synopsis
Ab s t rii ct. The nonperturbative vacuum structure of Quantum Chromodynamic is studied with the help of a generalization of the formalism of Green functions which corresponds t o 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 particiilar solutions with an energy gap in the spectrum of the quasi-particles and a phase transition a t a critical momentum.
Einfiihrang anomaler Greenscher Funktionen in die Quantenchromodynamik
I n h a l t s i i b e r s i c h t . Die nichtstorungstheoretische Vakuumstruktur der Quantenchromodynamik viird mit Hilfe einer Verallgemeinerung des Formalismus Greenscher Funktionen untersucht, die {dcr Methode von Gorkow und Nambu in der Theorie der Supraleitung entspricht. Unter Beriicksichtigung der Existenz der Gluonkondensation wird die Selbstenergie der Gluon-Quasi-Teilclien mit Hilfe modifizierter Feynman-Regeln berechnet. Daraus ergebcn sich Integralgleichungcn fur die cffektiven Feldparameter, die spezielle Losungen mit einer Energielucke im Spektrum der Quasi-'Teilchen und einen Phasenubergang bei einem kritischen Impuls enthalten.
π SIMILAR VOLUMES
We present a formal calculation of the infrared singularity structure of the fermion propagator in QED based on the Faddeev-Kulish asymptotic solution. The Renormalization program is reviewed in the context of the BPHZ subtraction scheme and a refinement of the Renormalization group methods is emplo
We discuss the general transport properties of superconducting quantum point contacts. We show how these properties can be obtained from a microscopic model using nonequilibrium Green's function techniques. For the case of a one-channel contact we analyze the response under different biasing conditi
In view of extending the shell model to highly deformed states of heavy nuclei, we discuss the evaluation of the Green's function for the Schrodinger equation in three dimensions with a smooth potential, in the limit of large quantum numbers. Such an evaluation is possible only after smoothing over