Supergravity and Superstrings: A Geometric Perspective

Abstract

All rights reserved. This boolc, or parts tlwreof, may 1101 be reproduced in any form orhyanymeans,electronicormechanit:lll,incllldifllphatocopying,recordingorany information storage and retrieWJI system IIOW ki!Own or to be invented, without written pcrmissiOfl from tlw Publislwr.ISBN 9971-S0-037-X (set) Printed in Singapore by Loi Printing Pte. Ltd. v PREFACEIn our hopes the present book is a self-contained account of the theory of supergravity and of the theory of superstrings. It is meant to be both introductory and advanced, this feature explaining its considerable length.The authors' views on the relevance of the whole subject can be related in a few words. On one hand we feel that reconciling quantum mechanics with general relativity is a logical necessity one cannot overlook, while trying to explain the structure of the other interactions. As far as we know the only serious candidate for a quantum theory of the graviton is superstring theory, whose low-energy approximation is supergravity. On the other hand, provided Higgs fields are necessary to explain spontaneous symmetry breaking, the only satisfactory solution of the gauge hierarchy problem seems to be given by spontaneously broken local supersymmetry. From the two opposite sides ofthe energy scale we come to the same suggestion: particle physics phenomenology should be described in terms of an effective supergravity model.Whether such views are supported by experimental evidence is a question that might be answered in the near future as soon as the LEP machine becomes operational.In any case it should be stressed that supersymmetry is a profound symmetry principle, with far reaching implications: it has the same standpoint as the principle of general covariance and, similarly, it provides an extremely elegant framework for the formulation of the laws of Nature.Furthermore, the structure of these theories encompasses so many different aspects and it is so ramified that they will continue to be interesting theoretical laboratories in many respects.We have chosen to present the whole subject in a systematic way, aiming more at the basic principles than at the specific applications: however the eventual use of the theory for the construction of a realistic model, describing particle phenomenology, has been our constant motivation directing our choices.We have tried to be exhaustive in the discussion of the different mechanisms, and models, but not in covering the various formalisms that have been historically utilized to derive the various results. Indeed we have presented everything in a unified language emphasizing the underlying geometrical structure. Furthermore, we have included several mathematical chapters, explaining, at each stage of the theory development, the mathematics involved in the construction.The book is divided into three volumes and six parts. The first volume introduces the geometric and algebraic foundations of supergravity (Parts One and Two, respectively). The second volume is devoted to the construction of supergravity ...

Supersymmetric completion of M-theory 4D-gauge algebra from twisted tori and fluxes

“…Supersymmetric Free Differential Algebra Let us introduce the four dimensional curvatures, written as forms on superspace and expanded in the super-vielbein basis {V r , Ψ A } (rheonomic parametrization [41]):…”

Stable de Sitter vacua from $\Script N$ $equal$ 2 supergravity

“…The models we will consider fall into the general framework of matter-coupled supergravity that was extensively discussed in the literature using both superconformal tensor calculus methods [11,31,32] and the more direct geometric methods based on the rheonomic approach [33,34]. Here we follow the notations and conventions of [34] where the most general form of an N = 2 supergravity action was given for an arbitrary choice of the special Kähler manifold of the vector multiplets, of the quaternionic manifold for hypermultiplets and with general permissible gauging.…”

Super M-brane actions inAdS4×S7andClaus1 1999Phys. Rev. D452260View full textAdd to dashboardCite

“…Using coset-space techniques (see e.g. [19]), various backgrounds for super p-brane actions have been constructed to all orders in θ, especially the adS 4 ×S 7 and adS 7 ×S 4 near-horizon backgrounds in [12]. It was established that a very powerfull trick to derive the vielbeine and spinconnection 1-form was to rescale the θ's, with a parameter that is put to unity in the end (see e.g.…”

“…the action is κ-invariant if 19) with κ a generic 11 dimensional σ-dependent spinor. We repeat the expression for…”