A Primer on Instantons in QCD
Hilmar Forkel
TL;DR
This paper introduces the fundamental concepts of instanton physics in QCD, highlighting their role in tunneling, vacuum structure, and quark interactions, with examples of their impact on hadron physics.
Contribution
It provides an accessible overview of instanton theory in QCD, emphasizing their significance in non-perturbative phenomena and their influence on hadronic physics.
Findings
Instantons contribute to tunneling amplitudes in QCD.
They influence the vacuum structure and induce quark interactions.
Examples show instantons' impact on hadron physics.
Abstract
These are the (twice) extended notes of a set of lectures given at the ``12th Workshop on Hadronic Interactions'' at the IF/UERJ, Rio de Janeiro (31. 5. - 2. 6. 2000). The lectures aim at introducing essential concepts of instanton physics, with emphasis on the role of instantons in generating tunneling amplitudes, vacuum structure, and the induced quark interactions associated with the axial anomaly. A few examples for the impact of instantons on the physics of hadrons are also mentioned.
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Taxonomy
TopicsQuantum Chromodynamics and Particle Interactions · Mathematical functions and polynomials · Particle physics theoretical and experimental studies