Physics – High Energy Physics – High Energy Physics - Theory
Scientific paper
2002-12-31
Nucl.Phys. B662 (2003) 185-219
Physics
High Energy Physics
High Energy Physics - Theory
37 pages, Plain Latex, 30-Dec-02
Scientific paper
10.1016/S0550-3213(03)00342-0
We study how to generate new Lie algebras $\mathcal{G}(N_0,..., N_p,...,N_n)$ from a given one $\mathcal{G}$. The (order by order) method consists in expanding its Maurer-Cartan one-forms in powers of a real parameter $\lambda$ which rescales the coordinates of the Lie (super)group $G$, $g^{i_p} \to \lambda^p g^{i_p}$, in a way subordinated to the splitting of $\mathcal{G}$ as a sum $V_0 \oplus ... \oplus V_p \oplus ... \oplus V_n$ of vector subspaces. We also show that, under certain conditions, one of the obtained algebras may correspond to a generalized \.In\"on\"u-Wigner contraction in the sense of Weimar-Woods, but not in general. The method is used to derive the M-theory superalgebra, including its Lorentz part, from $osp(1|32)$. It is also extended to include gauge free differential (super)algebras and Chern-Simons theories, and then applied to D=3 CS supergravity.
de Azcarraga Jose A.
Izquierdo Jose M.
Picon Moises
Varela Oscar
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