In-medium Pion-Pion Interaction and Chiral Symmetry Restoration
Nuclear Theory
2007-05-23 v1
Abstract
We discuss medium modifications of the unitarized pion-pion interaction in the nuclear medium. We incorporate both the effects of chiral symmetry restoration and the influence of collective nuclear pionic modes, originating from the p-wave coupling of the pion to delta-hole configurations. We show how the resulting strong enhancement of the sigma-meson spectral function is related to large fluctuations of the condensate associated with the partial restoration of chiral symmetry.
Keywords
Cite
@article{arxiv.nucl-th/0002032,
title = {In-medium Pion-Pion Interaction and Chiral Symmetry Restoration},
author = {D. Davesne and Y. J. Zhang and G. Chanfray and J. Wambach},
journal= {arXiv preprint arXiv:nucl-th/0002032},
year = {2007}
}
Comments
8 pages, 3 Postscript figures, contribution to the `International Workshop XXVIII on Gross Properties of Nuclei and Nuclear Excitations', Hirschegg, Austria, January 16-22 2000