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On the supersymmetry invariance of flat supergravity with boundary
Dra. Rodríguez-Durán, Evelyn 
Concha, Patrick
Ravera, Lucrezia
10.1007/JHEP01(2019)192
Springer Nature
2019
The supersymmetry invariance of flat supergravity (i.e., supergravity in the absence of any internal scale in the Lagrangian) in four dimensions on a manifold with non-trivial boundary is explored. Using a geometric approach we find that the supersymmetry invariance of the Lagrangian requires to add appropriate boundary terms. This is achieved by considering additional gauge fields to the boundary without modifying the bulk Lagrangian. We also construct an enlarged supergravity model from which, in the vanishing cosmological constant limit, flat supergravity with a non-trivial boundary emerges properly.
Supergravity models
Differential and algebraic geometry
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