Chiral Dynamics in Nucleons and Nuclei
نویسندگان
چکیده
We review the implications of the spontaneous chiral symmetry breaking in QCD for processes involving one, two or more nucleons. Commissioned article for Int. J. Mod. Phys. E CRN 95/3 TK 95 1 February 1995
منابع مشابه
Exploring the nucleus in the context of low-energy QCD
These lecture notes address a central problem of theoretical nuclear physics: how to establish a relationship between low-energy, non-perturbative QCD and nuclear phenomenology which includes both nuclear matter and finite nuclei. We develop a microscopic covariant description of nuclear many-body dynamics constrained by chiral symmetry and in-medium QCD sum rules. A relativistic pointcoupling ...
متن کاملChiral pion-nucleon dynamics in finite nuclei: spin-isospin excitations
The nuclear density functional framework, based on chiral dynamics and the symmetry breaking pattern of low-energy QCD, is extended to the description of collective nuclear excitations. Starting from the relativistic point-coupling Lagrangian introduced in Ref. [1], the proton-neutron (quasiparticle) random phase approximation is formulated and applied to investigate the role of chiral pion-nuc...
متن کاملar X iv : h ep - p h / 99 04 48 7 v 1 2 9 A pr 1 99 9 1 QCD Aspects of Hadron Physics
Several topics in hadron physics at different scales of resolution are discussed. First, deep-inelastic scattering from nucleons and nuclei is viewed in a light-cone coordinate space picture. Then the smooth transition from parton to hadron degrees of freedom is demonstrated by analysing generalized Q-dependent polarizabilities of the nucleon. Turning to low energy QCD we summarize recent devel...
متن کاملRecent developments in chiral dynamics of hadrons and hadrons in a nuclear medium
In this talk I present recent developments in chiral dynamics of hadrons and hadrons in a medium addressing the following points: interaction of the octet of pseudoscalar mesons with the octet of baryons of the nucleon, showing recent experimental evidence on the existence of two Λ(1405) states, the interaction of the octet of pseudoscalar mesons with the decuplet of baryons of the ∆, with part...
متن کاملA nucleonic NJL model for finite nuclei: dynamic mass generation and ground-state observables
We test the compatibiltiy of chiral symmetry, dynamic mass generation of the nucleon due to spontaneous breaking of chiral symmetry, and the description of finite nuclear systems by employing an NJL model understood as a chiral invariant effective theory for nucleons. We apply the model to nuclear matter as well as to finite nuclei. In the latter case, the model is adjusted to nuclear ground-st...
متن کامل