17245330
Conformal supergravity from the AdS / CFT correspondence
Construction of a five-dimensional conformal supergravity (D = 5 CSG) is attempted by applying the AdS/CFT correspondence to the F(4) AdS supergravity in six dimensions. As a first step, local transformation laws of D = 5 CSG have been established, from which the Weyl weights of the various fields in D = 5 can be predicted. (C) 2000 Elsevier Science B.V. All rights reserved.
14520037
Comments on higher derivative terms for the tachyon action
We consider the open string tachyon action in a world-sheet sigma model approach. We present explicit calculations up to order 8 in derivatives for the bosonic string, and mimic these to order 6 for the superstring, including terms with multiple derivatives acting on the tachyon field. We reproduce lower derivative terms obtained elsewhere, and speculate on the role of the world-sheet contact terms regularizing the action for the superstring tachyon.
14288400
SUPER WEYL ANOMALIES IN THE AdS/CFT CORRESPONDENCE
Anomalies of N=(4,4) superconformal field theories coupled to a conformal supergravity background in two dimensions are computed by using the AdS/CFT correspondence. We find that Weyl, axial gauge and super Weyl transformations are anomalous, while general coordinate, local Lorentz, vector gauge and local supertransformations are not. The coefficients of the anomalies show that the superconformal field theories have the central charge expected in the AdS/CFT correspondence.
9965823
Chiral symmetry breaking in brane models
We discuss the chiral symmetry breaking in general intersecting Dq/Dp brane models consisting of Nc Dq-branes and a single Dp-brane with an s-dimensional intersection. There exists a QCD-like theory localized at the intersection and the Dq/Dp model gives a holographic description of it. The rotational symmetry of directions transverse to both of the Dq and Dp-branes can be identified with a chiral symmetry, which is non-Abelian for certain cases. The asymptotic distance between the Dq-branes and the Dp-brane corresponds to a quark mass. By studying the probe Dp-brane dynamics in a Dq-brane background in the near horizon and large Nc limit we find that the chiral symmetry is spontaneously broken and there appear (pseudo-)Nambu-Goldstone bosons. We also discuss the models at finite temperature.
210000411
Three form flux with N=2 supersymmetry on AdS(5) x S**5
118417442
Coupling of the BLG theory to a conformal supergravity background
A bstractThe Bagger-Lambert-Gustavsson theory is coupled to an off-shell D = 3, $ \mathcal{N}=8 $ conformal supergravity background. Local transformation laws of the conformal supergravity multiplet are obtained from those of the D = 4, $ \mathcal{N}=8 $ SO(8) gauged super-gravity. The complete Lagrangian and local transformation laws of the coupled theory are obtained. As an application the supercurrent multiplet in a flat background is obtained.
122637395
Quasielastic scattering of He6 from C12 at 82.3 MeV/nucleon
Quasielastic scattering of {sup 6}He on a {sup 12}C target was measured at 82.3 MeV/nucleon. Special care was taken to treat the background subtraction at very small angles. The measured differential cross-sections show a large enhancement at small angles relative to the Rutherford cross-section, similar to those observed at lower energies for the scattering of halo nuclei. The overall structure of the cross-section is reasonably reproduced by the optical model calculations. The inelastic channels which populate two low-lying excited states of {sup 12}C target nucleus were included in the framework of the coupled channel analysis. Further systematic theoretical analysis is encouraged.