Linear spectrum of OSp(32/1) Chern-Simons supergravity in eleven dimensions.
We study linearized perturbations of eleven-dimensional OSp(32/1) Chern-Simons supergravity. The action contains a term that changes the value of the cosmological constant, as considered by Horava [Phys. Rev. D 59, 046004 (1999)]. It is shown that the spectrum contains a three-form and a six-form whose field strengths are dual to each other, thus providing a link with the eleven-dimensional supergravity of Cremmer et al. [Phys. Lett. 76B, 409 (1978)]. The linearized equations for the graviton and Rarita-Schwinger fields are shown to be the standard ones as well.
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Departamento de Física, P. Universidad Católica de Chile, Casilla 306, Santiago 22, Chile. mbanados@fis.puc.cl