248 citations · 2.7k across the 131 of their papers we have counts for
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Flipped GUT with conformal gravity from a single supermultiplet
David Chester, Alessio Marrani, Michael Rios +1
The Grassmann envelope is used to find the `superquasiconformal' algebra in . The adjoint representation of this algebra is found to contain $\mathfrak{su}_…
Jordan meets Freudenthal. A Black Hole Exceptional Story
Alessio Marrani
Within the extremal black hole attractors arising in ungauged -extended Maxwell Einstein supergravity theories in space-time dimensions, we provide an…
Generalized Freudenthal duality for rotating extremal black holes
Arghya Chattopadhyay, Taniya Mandal, Alessio Marrani
Freudenthal duality (FD) is a non-linear symmetry of the Bekenstein-Hawking entropy of extremal dyonic black holes (BHs) in Maxwell-Einstein-scalar theories in four space-time dime…
Dixon-Rosenfeld Lines and the Standard Model
David Chester, Alessio Marrani, Daniele Corradetti +2
We present three new coset manifolds named Dixon-Rosenfeld lines that are similar to Rosenfeld projective lines except over the Dixon algebra $\mathbb{C}\otimes\mathbb{H}\otimes\ma…
Near-Extremal Freudenthal Duality
Arghya Chattopadhyay, Taniya Mandal, Alessio Marrani
Freudenthal duality is, as of now, the unique non-linear map on electric-magnetic (e.m.) charges which is a symmetry of the Bekenstein-Hawking entropy of extremal black holes in Ma…
Spontaneous scalarization in (A)dS gravity at zero temperature
Alessio Marrani, Olivera Miskovic, Paula Quezada
We study spontaneous scalarization of electrically charged extremal black holes in spacetime dimensions. Such a phenomenon is caused by the symmetry breaking due to quart…