Methods on compositeness and related aspects
Quantum Physics
2023-01-11 v1 High Energy Physics - Phenomenology
Nuclear Theory
Abstract
In many physical applications, bound states and/or resonances are observed, which raises the question whether these states are elementary or composite. Here we elaborate on several methods for calculating the compositeness of bound states and resonances in Quantum Mechanics, and in Quantum Field Theory by introducing particle number operators. For resonances is typically complex and we discuss how to get meaningful results by using certain phase transformations in the matrix.
Cite
@article{arxiv.2211.02083,
title = {Methods on compositeness and related aspects},
author = {J. A. Oller},
journal= {arXiv preprint arXiv:2211.02083},
year = {2023}
}
Comments
8 pages, 2 figures, contributed to "XVth Quark Confinement and the Hadron Spectrum Conference" (1-6 August 2022, Stavanger, Norway)