Contains two articles, one providing a historical retrospective of one of the triumphs of nuclear physics in the twentieth century and the other providing an introduction to one of the quantitative tools for understanding strong interactions in the twenty-first century. This text is suitable for advanced graduate courses in nuclear physics.

This volume contains two major articles, one providing a historical retrospective of one of the great triumphs of nuclear physics in the twentieth century and the other providing a didactic introduction to one of the quantitative tools for understanding strong interactions in the twenty-first century. This text is suitable only for advanced graduate courses in nuclear physics.

1: Fifty Years of the Shell Model - The Quest for the Effective Interaction. 1. Introduction. 2. The (Re)Emergence of the Shell Model. 3. Early Calculations. 4. Effective Interactions from Experimental Nuclear Energies. 5. Some Schematic Interactions and Applications. 6. Seniority and Generalized Seniority in Semi-Magic Nuclei. 7. Large-Scale Shell Model Calculations. 8. What Have We Learned? Where Do We Stand? References.- 2: Introduction to Chiral Perturbation Theory.- 1. Introduction. 2. QCD and Chiral Symmetry. 3. Spontaneous Symmetry Breaking and the Goldstone Theorem. 4. Chiral Perturbation Theory for Mesons. 5. Chiral Perturbation Theory for Baryons. 6. Summary and Concluding Remarks.- Appendix: A.1. Green Functions and Ward Identities. A.2. Dimensional Regularization: Basics. A.3. Loop Integrals. A.4. Different Forms of L4 in SU(2) x SU(2). References.- Index.