uc l - th / 9 70 60 75 v 1 2 6 Ju n 19 97 LBNL – 39463 UC – 413 Aspects of Chiral Symmetry

uc l - th / 9 70 60 75 v 2 2 7 Ju n 19 97 LBNL – 39463 UC – 413 Aspects of Chiral Symmetry

This article is an attempt to a pedagogical introduction and review into the elementary concepts of chiral symmetry in nuclear physics. Effective chiral models such as the linear and nonlinear sigma model will be discussed as well as the essential ideas of chiral perturbation theory. Some applications to the physics of ultrarelativistic heavy ion collisions will be presented. This work was supp...

ar X iv : n uc l - th / 9 80 60 97 v 1 2 9 Ju n 19 98 3 P 2 - 3 F 2 pairing in neutron matter with modern nucleon - nucleon potentials

ar X iv : n uc l - th / 9 70 60 42 v 1 1 7 Ju n 19 97 Electromagnetic Form Factors of the Nucleon

We reanalyze the world data on the electromagnetic form factors of the nucleon. The calculations are performed in the framework of an algebraic model of the nucleon combined with vector meson dominance.

n uc l - th / 9 71 10 53 v 1 2 5 N ov 1 99 7 USC ( NT ) - 97 - 09 , nucl - th / 9711053 Chiral Perturbation Theory

Chiral symmetry serves as a guiding principle in low-energy hadron dynamics. An effective lagrangian, which explicitly breaks chiral symmetry via a small mass term, allows for a systematic method of calculating higher order corrections to tree-level results. This is applied to radiative muon capture on hydrogen, and to proton-proton π 0 production near threshold. Both processes pose theoretical...

ar X iv : n uc l - th / 9 70 60 35 v 1 1 6 Ju n 19 97 Is there a Pronounced Giant Dipole Resonance in 4 He ?

A four–nucleon calculation of the total 4He photodisintegration cross section is performed. The full final–state interaction is taken into account for the first time. This is achieved via the method of the Lorentz integral transform. Semi–realistic NN interactions are employed. Different from the known partial two–body 4He(γ, n)3He and 4He(γ, p)3H cross sections our total cross section exhibits...