Extended D=3 Bargmann supergravity from a Lie algebra expansion
Abstract
In this paper we show how the method of Lie algebra expansions may be used to obtain, in a simple way, both the extended Bargmann Lie superalgebra and the Chern-Simons action associated to it in three dimensions, starting from D=3, N=2 superPoincar\'e and its corresponding Chern-Simons supergravity.
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