The Theory of Quark and Gluon Interactions pp 345-360 | Cite as
Instantons
Chapter
Abstract
In ordinary quantum mechanics, the WKB approximation is obtained by expanding in powers of Planck’s constant, ħ. To zero order we have the classical trajectory; higher orders yield the quantum fluctuations around this trajectory. The path integral formulation lends itself particularly well to the extension of the method to the field-theoretic case. To accomplish this, we reintroduce ħ into the expression for the generating functions of a field theory that, to simplify, we start by taking to be scalar. From (1.3.11) we then have
Keywords
Gauge Transformation Minkowski Space Colour Index Homotopy Class Deep Inelastic Scattering
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.
Preview
Unable to display preview. Download preview PDF.
Copyright information
© Springer 2006