Three-dimensional hypergravity theories and semigroup expansion method
Three-dimensional hypergravity theories and semigroup expansion method
A bstract In this work, we apply the semigroup expansion method of Lie algebras to construct novel and known three-dimensional hypergravity theories. We show that the expansion procedure considered here yields a consistent way of coupling different three-dimensional Chern-Simons gravity theories with massless spin- $$ \frac{5}{2} $$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:mfrac> …