TL;DR
This paper provides an introductory overview of renormalisation, covering fundamental concepts, the renormalisation group, gauge theories like QCD, and discusses scale setting and optimization methods.
Contribution
It offers a pedagogical introduction to renormalisation and summarizes current approaches in gauge theories and scale setting in QCD.
Findings
Summarizes the state of the art in renormalisation for gauge theories.
Discusses optimization procedures for renormalisation scale setting.
Provides a pedagogical overview of fundamental concepts and the renormalisation group.
Abstract
We give an introduction to renormalisation, focusing first on a pedagogical description of fundamental concepts of the procedure and its features, then we introduce the renormalisation group and its equations. We discuss then the case of gauge theories such as QCD summarising the current state of the art. We introduce the renormalisation scale setting problem in QCD and we give an illustration of the possible optimisation procedures currently in use.
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Taxonomy
TopicsQuantum Chromodynamics and Particle Interactions · Particle physics theoretical and experimental studies · Quantum and Classical Electrodynamics