A note on the Chevalley-Eilenberg Cohomology for the Galilei and Poincare Algebras

Abstract

We construct in a systematic way the complete Chevalley-Eilenberg cohomology at form degree two, three and four for the Galilei and Poincare groups. The corresponding non-trivial forms belong to certain representations of the spatial rotation (Lorentz) group. In the case of two forms they give all possible central and non-central extensions of the Galilei group (and all non-central extensions of the Poincare group). The procedure developed in this paper can be applied to any space-time symmetry group.

11 pages, no figures Added several references, corrected typos

References in corpus (2)

• Non-relativistic strings and branes as non-linear realizations of Galilei groups
• Tensor extension of the Poincaré algebra

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