Character Expansions in Physics
A.B. Balantekin (Wisconsin U., Madison)
TL;DR
This paper reviews a formula for expanding products of invariant functions in terms of group characters, highlighting its broad applications in physics and related fields.
Contribution
It introduces a formula for character expansions and discusses various applications, providing a concise overview of this mathematical technique.
Findings
Provides a general formula for character expansions
Highlights applications in physics and related fields
Summarizes the utility of character expansions in various contexts
Abstract
Expanding products of invariant functions of a group element as a series in the basis of characters of the irreducible representations of a group is widely used in many areas of physics and related fields. In this contribution a formula to generate such expansions and its various applications are briefly reviewed.
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