Towards a Chern-Simons M theory of $OSp(1|32)\times OSp(1|32)$

Abstract

A possible way of defining M theory as the CS theory for the supergroup $OSp(1|32)\times OSp(1|32)$ is investigated, based on the approach by Horava in hep-th/9712130. In the high energy limit (expansion in M), where only the highest ($R^5$) terms survive in the action, the supergroup contracts to the D'Auria-Fre M theory supergroup. Then the contracted equations of motion are solved by the usual 11d supergravity equations of motion, linearized in everything but the vielbein. These two facts suggest that the whole nonlinear 11d sugra should be obtainable somehow in the contraction limit. Type IIB also arises as a contraction of the $OSp(1|32)\times OSp(1|32)$ theory. The presence of a cosmological constant in 11d constraints the parameter M experimentally to be of the order of the inverse horizon size, $1/L_0$. Then the 11d Planck mass $M_{P,11}\sim 10GeV$ (hopefully higher: $>TeV$ due to uncertainties). Unfortunately, the most naive attempt at cosmological implications for the theory is excluded experimentally. Interestingly, the low energy expansion (high M) of the CS theory, truncated to the gravitational sector, gives much better phenomenology.

arXiv comment49 pages, no figures

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• The Extended Cartan Homotopy Formula and a Subspace Separation Method for Chern--Simons Theory
• Eleven-Dimensional Gauge Theory for the M Algebra as an Abelian Semigroup Expansion of osp(32|1)
• (Super-)Gravities of a different sort
• Superbranes, D=11 CJS supergravity and enlarged superspace coordinates/fields correspondence