248 citations · 2.7k across the 131 of their papers we have counts for
135 papers
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…
Vinberg's T-Algebras. From Exceptional Periodicity to Black Hole Entropy
Alessio Marrani
We introduce the so-called Magic Star (MS) projection within the root lattice of finite-dimensional exceptional Lie algebras, and relate it to rank-3 simple and semi-simple Jordan…
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…
Introduction to the special issue dedicated to Michael J. Duff FRS on the occasion of his 70th birthday
L. Borsten, A. Marrani, C. N. Pope +1
This special feature, dedicated to Michael J. Duff FRS on the occasion of his 70th birthday, concerns topics in 'Quantum gravity, branes and M-theory'. These three intertwining sub…
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…