The Dominican Republic-- After the Caudillos

The Dominican Republic played a major role in the early history of NACLA, and it is therefore fitting that the country be re-examined in one of NACLA\u27s thirtieth anniversary issues. It was largely in response to the 1965 U.S. invasion and occupation of the island that a group of academics, clergy and radical activists organized a 1966 conference called the North American Congress on Latin America. The congress stayed together beyond the conference, and in February, 1967, began publishing the NACLA Newsletter, which evolved into today\u27s NACLA Report on the Americas

Dynamics of topological solitons in two-dimensional ferromagnets

Dynamical topological solitons are studied in classical two-dimensional Heisenberg easy-axis ferromagnets. The properties of such solitons are treated both analytically in the continuum limit and numerically by spin dynamics simulations of the discrete system. Excitation of internal mode causes orbital motion. This is confirmed by simulations.Comment: LaTeX, 15 pages, 6 figure

Confinement from new global defect structures

We investigate confinement from new global defect structures in three spatial dimensions. The global defects arise in models described by a single real scalar field, governed by special scalar potentials. They appear as electrically, magnetically or dyonically charged structures. We show that they induce confinement, when they are solutions of effective QCD-like field theories in which the vacua are regarded as color dielectric media with an anti-screening property. As expected, in three spatial dimensions the monopole-like global defects generate the Coulomb potential as part of several confining potentials.Comment: RevTex4, 7 pages, 1 figure. Version to appear in Eur. Phys. J.