Quark Degrees of Freedom in Finite Nuclei

Abstract

Properties of finite nuclei are investigated based on relativistic Hartree equations which have been derived from a relativistic quark model of the structure of bound nucleons. Nucleons are assumed to interact through the (self-consistent) exchange of scalar ($\sigma$) and vector ($\omega$ and $\rho$) mesons at the quark level. The coupling constants and the mass of the $\sigma$-meson are determined from the properties of symmetric nuclear matter and the rms charge radius in ${}^{40}$Ca. Calculated properties of static, closed-shell nuclei, as well as symmetric nuclear matter are compared with experimental data and with the results of Quantum Hadrodynamics (QHD).

4 pages, 3 postscript figures are included, uses world scientific style (style format is included). To appear in the proceedings of The International Symposium on Non-Nucleonic Degrees of Freedom Detected in Nucelus, Osaka, Japan, Sept. 2-5, 1996. Postscript file is also available at http://www.physics.adelaide.edu.au/theory/home.html or ftp://adelphi.adelaide.edu.au/pub/theory/ADP-96-32.T231.ps