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Supergravity and Superstrings: A Geometric Perspective
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Symmetries in constrained Hamiltonian systems
We derive an algorithm for the construction of all the gauge generators of a constrained hamiltonian theory. Dirac's conjecture that all secondary first-class constraints generate symmetries isExpand
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A classification of compactifying solutions for d =11 supergravity
Abstract Supergravity in eleven dimensions is known to have classical solutions of the type (anti-de Sitter space-time) × (7-dimensional Einstein space). We give a list of all homogeneous 7-manifoldsExpand
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INTRODUCTION TO PART ONE
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Noncommutative D=4 gravity coupled to fermions
We present a noncommutative extension of Einstein-Hilbert gravity in the context of twist-deformed space-time, with a -product associated to a quite general triangular Drinfeld twist. In particularExpand
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SU(3)⊗SU(2)⊗U(1) from D=11 supergravity
In this paper we show that D = 11 supergravity admits an infinite discrete class of solutions having the phenomenological group SU(3) ⊗ SU(2) ⊗ U(1) as a symmetry of the internal space M7. TheseExpand
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AN INTRODUCTION TO NONCOMMUTATIVE DIFFERENTIAL GEOMETRY ON QUANTUM GROUPS
We give a pedagogical introduction to the differential calculus on quantum groups by stressing at all stages the connection with the classical case (q→1 limit). The Lie derivative and the contractionExpand
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Noncommutative gravity coupled to fermions: second order expansion via Seiberg-Witten map
A bstractWe use the Seiberg-Witten map (SW map) to expand noncommutative gravity coupled to fermions in terms of ordinary commuting fields. The action is invariant under general coordinateExpand
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SPECIAL KAHLER GEOMETRY: AN INTRINSIC FORMULATION FROM N=2 SPACE-TIME SUPERSYMMETRY
Abstract N =2, 4D supergravity coupled to vector multiplets (1, 1 2 , 0) is reanalysed in a geometrical setting. By requiring the closure of the supersymmetry transformation laws, we find aExpand
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