Symmetries of the Chern-Simons Theory in the Axial Gauge, Manifold with Boundary

The field equations of the Chern-Simons theory quantized in the axial gauge are shown to be completely determined by supersymmetry Ward identities which express the invariance of the theory under the topological supersymmetry of Delduc, Gieres and Sorella together with the usual Slavnov identity without requiring any action principle.Comment: 8 pages LaTeX, report UGVA-DPT 1994/01-84

Five-Dimensional BF Theory and Four-Dimensional Current Algebra

We consider the relation between the five-dimensional BF model and a four-dimensional local current algebra from the point of view of perturbative local quantum field theory. We use an axial gauge fixing procedure and show that it allows for a well defined theory which actually can be solved exactly.Comment: 15 pages LaTeX file +3 Figures in TexDraw (available from hep-th) LATEX-compatibility Bug fixe

Pairing and Phase Coherence in High Temperature Superconductors

Mobile holes in an antiferromagnetic insulator form a slowly fluctuating array of quasi one-dimensional metallic stripes, which induce a spin gap or pseudogap in the intervening Mott-insulating regions. The mobile holes on an individual stripe acquire a spin gap via pair hopping between the stripe and its environment; i.e. via a magnetic analog of the usual superconducting proximity effect. This process is the analog of pairing in conventional superconductors. At non-vanishing stripe densities, Josephson coupling between stripes produces a dimensional crossover to a state with long-range superconducting phase coherence. In contrast to conventional superconductors, the superconducting state is characterised by a high density of (spin) pairs, but the phase stiffness, which is determined by the density and mobility of holes on the stripes, is very low.Comment: 4 pages. Proceedings of MMS-High Temperature Superconductivity, V (1997) To be published in Physica

Source of water in basins off southern California

Water temperature and salinity measurements from most of the 14 basins off southern California, when compared with older data, show no detectable changes. The water in each basin is nearly isothermal and isohaline from the bottom to near the sill depth...

Wave patterns off southern California

Mapping of wave trains during four flights over the ocean off southern California showed the consistent presence of a high 10-second swell from the westnorthwest, of one or two low 3- to 5-second swells from other westerly directions, and of local wind waves; occasionally a low 13-second swell from the west and southwest was also present. Islands reduce the height of swells but produce little discernable crossswell in their lee...

Oceanography on a Postage Stamp

Many postage stamps have designs that illustrate various aspects of oceanography. A representative selection of them reveals an international interest in the oceans

Seismic reflection, magnetic, and gravity profiles of the eastern Atlantic continental margin and adjacent deep-sea floor. I. Cape Francis (South Africa) to Congo Canyon (Republic of Zaire)

One of the programs of the International Decade of Ocean Exploration (!DOE) is a four-year geophysical and geological study of the Eastern Atlantic Continental Margin and the adjacent deep·sea floor. It was designed to learn more of the date and manner by which Africa became separated from South America and the subsequent history and development of the African continental margin and adjoining deep-sea floor. The traverses also serve to outline large sedimentary basins that may be potential reservoirs of petroleum. Subsequent more detailed exploration and eventual exploitation of these basins may be conducted or controlled by the adjacent African nations under whose jurisdiction the areas belong. This report is a compilation of the geophysical traverses made from Cape Francis (South Africa) to the Congo Canyon (Republic of Zaire) during the first half of 1972