242 research outputs found

    Superconformally covariant operators and super W algebras

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    We study superdifferential operators of order 2n+12n+1 which are covariant with respect to superconformal changes of coordinates on a compact super Riemann surface. We show that all such operators arise from super M\"obius covariant ones. A canonical matrix representation is presented and applications to classical super W algebras are discussed.Comment: 23 pages, LATEX, MPI-Ph/92-66 and KA-THEP-7/9

    Implications of N = 2 Superconformal Symmetry

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    We review recent results on the general structure of two- and three- point functions of the supercurrent and the flavor current of N = 2 superconformal field theories.Comment: 7 pages, latex, JHEP style, no figures; based on talks delivered at the Workshop on Supersymmetries and Quantum Symmetries, Dubna, Russia, 26-31 Jul 1999, and at the Meeting on Quantum Aspects of Gauge Theories, Supersymmetry and Unification, Paris, France, 1-7 Sep 199

    Stringy Corrections to the Wilson Loop in N=4 Super Yang-Mills Theory

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    We study stringy fluctuations as a source for corrections to the Wilson loop as obtained from the superstrings on (adS_5 x S^5)/ N=4 SYM correspondence. We give a formal expression in terms of determinants of two dimensional operators for the leading order correction.Comment: 14 pages, harvmac (b

    Moduli Anomalies and Local Terms in the Operator Product Expansion

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    Local terms in the Operator Product Expansion in Superconformal Theories with extended supersymmetry are identified. Assuming a factorized structure for these terms their contributions are discussed.Comment: 24 pages, 2 figures, v2: footnote and reference adde

    AdS_5 x S^5 Black Hole Metric at O(alpha'^3)

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    We compute O(α′3)O(\alpha'^3) corrections to the AdS5×S5AdS_5\times S^5 black hole metric. We find that the radius of the S5S^5 depends on the radial AdS5AdS_5 coordinate. This completes the computation of Gubser, Klebanov and Tseytlin (hep-th/9805156). The fact that the metric no longer factorizes should modify the value of the Wilson line at finite temperature and the glueball mass spectrum.Comment: 7 pages, TeX (harvmac

    Comments on the Algebraic Properties of Dilaton Actions

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    We study the relation between the dilaton action and sigma models for the Goldstone bosons of the spontaneous breaking of the conformal group. We argue that the relation requires that the sigma model is diffeomorphism invariant. The origin of the WZW terms for the dilaton is clarified and it is shown that in this approach the dilaton WZW term is necessarily accompanied by a Weyl invariant term proposed before from holographic considerations.Comment: 19 page

    Some aspects of holographic W-gravity

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    We use the Chern-Simons formulation of higher spin theories in three dimensions to study aspects of holographic W-gravity. Concepts which were useful in studies of pure bulk gravity theories, such as the Fefferman-Graham gauge and the residual gauge transformations, which induce Weyl transformations in the boundary theory and their higher spin generalizations, are reformulated in the Chern-Simons language. Flat connections that correspond to conformal and lightcone gauges in the boundary theory are considered.Comment: 42 page

    Classical N=1N=1 and N=2N=2 super W-algebras from a zero-curvature condition

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    Starting from superdifferential operators in an N=1N=1 superfield formulation, we present a systematic prescription for the derivation of classical N=1N=1 and N=2N=2 super W-algebras by imposing a zero-curvature condition on the connection of the corresponding first order system. We illustrate the procedure on the first non-trivial example (beyond the N=1N=1 superconformal algebra) and also comment on the relation with the Gelfand-Dickey construction of WW-algebras.Comment: 18 pages, tex, LMU-TPW 93-0

    Towards metric-like higher-spin gauge theories in three dimensions

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    We consider the coupling of a symmetric spin-3 gauge field to three-dimensional gravity in a second order metric-like formulation. The action that corresponds to an SL(3,R) x SL(3,R) Chern-Simons theory in the frame-like formulation is identified to quadratic order in the spin-3 field. We apply our result to compute corrections to the area law for higher-spin black holes using Wald's entropy formula.Comment: 29 pages; v2: typos correcte
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