P-Branes, Poisson-Sigma-Models and Embedding Approach to (p+1)- Dimensional Gravity

Details P-Branes, Poisson-Sigma-Models and Embedding Approach to (p+1)- Dimensional Gravity P-Branes, Poisson-Sigma-Models and Embedding Approach to (p+1)- Dimensional Gravity

1997-03-13

arxiv.org/abs/hep-th/9703099v2

Int.J.Mod.Phys. A14 (1999) 4881-4914

Physics

High Energy Physics

High Energy Physics - Theory

30 pages, LATEX, no figures, documentstyle is changed for readers convenience

Scientific paper

10.1142/S0217751X99002311

A generalization of the embedding approach for d-dimensional gravity based upon p-brane theories is considered. We show that the D-dimensional p-brane coupled to an antisymmetric tensor field of rank (p+1) provides the dynamical basis for the description of d=(p+1) dimensional gravity in the isometric embedding formalism. ''Physical'' matter appears in such an approach as a manifestation of a D-dimensional antisymmetric tensor (generalized Kalb- Ramond) background. For the simplest case, the Lorentz harmonic formulation of the bosonic string in a Kalb-Ramond background and its relation to a first order Einstein-Cartan approach for d=2 dimensional gravity is analysed in some detail. A general Poisson-sigma-model structure emerges. For the minimal choice of D=3 an interesting ``dual'' formulation is found which has the structure of a Jackiw-Teitelboim theory, coupled minimally to a massive scalar field. Our approach is intended to serve as a preparation for the study of d- dimensional supergravity theory, either starting from the generalized action of free supersymmetric (d-1)-branes or $D_{(d-1)}$-branes, or from the corresponding geometric equations ('rheotropic' conditions).

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