ar X iv : n uc l - th / 9 80 70 23 v 1 7 J ul 1 99 8 WHAT EFFECTIVE FIELD THEORY

ar X iv : n uc l - th / 9 80 70 18 v 1 7 J ul 1 99 8 Weak Decay of Λ Hypernuclei

We review recent developments concerning the weak decay of Λ hypernuclei. New studies covering the mesonic decay channel as well as recent models for the non-mesonic one are discussed and compared with experimental data. The puzzle of the neutronto proton-induced decay ratio, Γn/Γp, is addressed in connection to the two-nucleon induced decay channel and proposals for more efficient experimental...

ar X iv : n uc l - th / 9 80 70 41 v 1 1 5 Ju l 1 99 8 Nuclear Physics

Nuclear Physics is the branch of physics that deals with the properties and structure of matter on the hadronic level. In this article we review briefly the history of this field, which has a major role in the development of our understanding of nature. We then proceed to give an outline of a current perspective of the field and of some of the issues that are now on its frontiers.

ar X iv : n uc l - th / 9 80 70 17 v 1 6 J ul 1 99 8 Electromagnetic Processes in Three - Nucleon Systems

Results gained for electron scattering on 3 He in a nonrelativistic framework are reviewed. The electromagnetic current is truncated to a single nucleon operator, but the interaction among the three nucleons is treated exactly. Thus initial and final 3N states are evaluated consistently as solutions of Faddeev equations based on realistic NN forces. The correct inclusion of the final state inte...

ar X iv : n uc l - th / 9 90 60 29 v 3 1 5 Ju l 1 99 9 1 Quark Matter ’ 99 — Theoretical Summary : What Next ?

ar X iv : n uc l - th / 9 80 70 34 v 1 1 0 Ju l 1 99 8 Universalities of Triplet Pairing in Neutron Matter

The fundamental structure of the full set of solutions of the BCS P2 pairing problem in neutron matter is established. The relations between different spin-angle components in these solutions are shown to be practically independent of density, temperature, and the specific form of the pairing interaction. The spectrum of pairing energies is found to be highly degenerate. Typeset using REVTEX