Can I read $\mathcal{N}=2$ Extended MacDowell-Mansouri Supergravity on EtoBox?

$\mathcal{N}=2$ Extended MacDowell-Mansouri Supergravity by Alvarez, Pedro D.; Delage, Lucas; Valenzuela, Mauricio; Zanelli, Jorge is a scholarly article available to read on EtoBox.

What is $\mathcal{N}=2$ Extended MacDowell-Mansouri Supergravity about?

We construct a gauge theory based in the supergroup $G=SU(2,2|2)$ that generalizes MacDowell-Mansouri supergravity. This is done introducing an extended notion of Hodge operator in the form of an outer automorphism of $su(2,2|2)$-valued 2-form tensors. The model closely resembles a Yang-Mills theory -- including the action principle, equations of motion and gauge transformations -- which avoids the use of the otherwise complicated component formalism. The theory enjoys $H=SO(3,1)\times \mathbb{R} \times U(1)\times SU(2)$ off-shell symmetry whilst the broken symmetries $G/H$, translation-type symmetries and supersymmetry, can be recovered on surface of integrability conditions of the equations of motion, for which it suffices the Rarita-Schwinger equation and torsion-like constraints to hold. Using the \textit{matter ansatz} -- projecting the $1 \otimes 1/2$ reducible representation into the spin-$1/2$ irreducible sector -- we obtain (chiral) fermion models with gauge and gravity interactions.

Author

Alvarez, Pedro D.; Delage, Lucas; Valenzuela, Mauricio; Zanelli, Jorge

Published

2021

Language

EN