Gravitons and gauge fields in 5d Chern-Simons supergravity

Abstract

Despite the nice geometrical properties of higher dimensional Chern-Simons (CS) supergravity theories these actions suffer from one major drawback, namely, their connection with the real world. After some quick remarks on three-dimensional gravity, we consider five-dimensional CS supergravity and study to what extend this theory reproduces the standard low energy description of gravitons and gauge fields. We point out that if one deforms the CS action by changing the value of the cosmological constant by a small amount (thus breaking the CS symmetry), propagation around AdS becomes non-trivial, asymptotically (AdS) Schwarzschild solutions exist, and the gauge field acquires its standard quadratic propagator.

Some improvements in the section on `backgrounds', and references added. 10 pages, latex, no figures, uses espcrc2.sty (twocolumn). Written version of an invited Lecture delivered at the QG99 meeting, held in Sardinia, Italy, on Sept. 1999

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