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The three-flavor Skyrme-'t Hooft-Witten model is interpreted in terms of a quark-like substructure, leading to a new model of explicitly confined color-free ``quarks'' reminiscent of Gell-Mann's original pre-color quarks, but with unexpected and significant differences., Comment: Latex, 6 pages, no figures

The recently introduced $\kappa$-Poincare-Dirac equation is gauged to treat the $\kappa$-Dirac-Coulomb problem. For the resulting equation, we prove that the perturbation to first order in the quantum group parameter vanishes identically. The second order perturbation is singular, but assuming a heuristic cut-off allows a qualitative estimate of the quantum group parameter., Comment: 7 pages, LaTeX, special style file `eqpersec.sty' included separately, DUKE-TH-93-59

The objective of the research summerized here was to determine the stress dependence of the chemical potential of atoms chemisorbed to metal surfaces. We have developed a new band theory of crystalline solids that is general, i.e., can be applied to all crystalline solids. We are now in the process of improving the numerical computational capacity of our software and computer system so that we can then go into the next phase: the introduction of a 'surface' into the theory to get back to the phenomenon we started from, namely chemisorption on solid crystalline solids under stress.

The paper demonstrates by explicit construction a primitive minimal realization of the SU(2) approximately equal to Sp(2) symmetry group in terms of a single boson operator. Our construction denies the usual boson rule, and as such constitutes a true generalization of the concept of boson. The resulting inherently conjugation symmetric structure is denoted as a symplecton. (Author), Sponsored in part by Army Research Office, Durham, N. C. and National Science Foundation, Washington, D. C.

For a large class of tensor operators in U(n), a surprisingly simple diagrammatic calculus of patterns is shown to exist; to each operator of this class a pattern may be assigned in terms of which the complete algebraic formula for all matrix elements may be read off directly. The class of operators includes all fundamental, elementary and extremal Wigner operators in all U(n). Application of the pattern calculus toward the explicit determination of all tensor operators is discussed. (Author), Prepared in cooperation with Los Almos Scientific Lab., N. Mex.

The very great importance in all branches of quantum physics of the Wigner-Racah angular momentum calculus has led to many attempts to generalize this structure from the two-dimensional unimodular unitary ('angular momentum') group, where it originated, to the general semi-simple compact Lie group. A solution to the various problems connected with this generalization, in particular the problem of simple reducibility, has been sketched in an earlier note (AD-613 412), and the detailed proofs of the results stated there have been obtained. The purpose of the present note is to show that this generalization is a canonical resolution of the multiplicity problem, explicitly for all SU sub n and thereby implicity for all other groups in question by imbedding in SU sub n. The method is especially interesting in that it demonstrates a new significance for the Racah coefficients, and shows the existence of intriguing continuum limit properties for the generalized Racah and Wigner coefficients. Proofs of the assertions to be made below will be given elsewhere, but the structure of the results to be presented is rather elegant and should be easily accessible., Pub. in Physics Letters v14 n3 p254-5 Feb 1 1965 (Copies available only to DDC users).

It is shown that the SU4 supermultiplet scheme of Leung and Barut (Y. C. Leung and A. O. Barut, preprint IC/65/16, 6 Feb. 1965, Intern. Centre for Theoretical Physics, Trieste, Italy) lacks the uniqueness which characterizes the magnetic moment predictions for the nucleons in SU6., Pub. in Physics Letters v16 n1 p92-3 May 1 1965 (Copies available only to DDC users).

The angular distribution of the inelastically scattered particles following Coulomb excitation is calculated for electric quadrupole transitions. The quantum mechanical calculations are performed for the case of finite energy loss and a comparison is made between the semi-classical and quantum mechanical angular distributions. (Author), Pub. in Nuclear Physics (Netherlands) v36 p452-6 1962 (Copies available only to DDC users) Supported in part by ARO(D) and NSF.

Contents: Isospin as the Model. Variations on the Theme of Angular Momentum; SU (Sub 3) Treated by the Pattern Calculus -- Weyl dimension formula, An elementary view of the Casimir invariants, Symmetries of the weight diagrams, I spin, U spin, V spin, and Conjugation - the operator R; The Gell-Mann-NE'Emann Eightfold Way -- The Gell-Mann-Okubo mass formula, Omega-phi mixing, Electromagnetic effects, and The mass formula-re-visited, Combining of Multiplets -- The Direct Product; Some Further Applications to SU (Sub 3); Extension of the Eightfold Way; SU (Sub 6) -- SU (Sub 6) techniques, Assignments of multiplets, The state vectors for the baryon SU (Sub 6) multiplet '56', Tuark spin operators, Magnetic moments of the baryons, Magnetic moments and transition moments for the boson multiplet '35', Mass formulae in SU (Sub 6), and The F/D ratio in the Yukawa coupling of mesons to baryons., Prepared in cooperation with European Council for Nuclear Research, Geneva (Switzerland).