Chiral doublet model for the positive and negative parity nucleons
Nuclear Theory
2007-05-23 v1
Abstract
We discuss the properties of the nucleon (N) and its excited state with odd parity (N*) under the aspect of chiral symmetry, identifying them with suitable representations of the chiral group. It is shown that there are two distinctive schemes to assign the chiral multiplet to N and N*. We construct linear sigma models for N and N* with the two assignments to show their physical implications. We also discuss the in-medium properties of N(1535), comparing the present model with the other chiral model based on the different picture of N*.
Keywords
Cite
@article{arxiv.nucl-th/0312005,
title = {Chiral doublet model for the positive and negative parity nucleons},
author = {D. Jido},
journal= {arXiv preprint arXiv:nucl-th/0312005},
year = {2007}
}
Comments
8 pages, 1 figure, ptptex. Invited talk at International Symposium on Hadron Spectroscopy, Chiral Symmetry and Relativistic Description of Bound Systems, Tokyo, Japan, 24-26 Feb 2003