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7 papers · 2 filters
Black hole solutions of N=2, d=4 supergravity with a quantum correction, in the H-FGK formalism
Pietro Galli, Tomas Ortin, Jan Perz +1
We apply the H-FGK formalism to the study of some properties of the general class of black holes in N=2 supergravity in four dimensions that correspond to the harmonic and hyperbol…
The Freudenthal gauge symmetry of the black holes of N=2,d=4 supergravity
Pietro Galli, Patrick Meessen, Tomas Ortin
We show that the representation of black-hole solutions in terms of the variables H^M which are harmonic functions in the supersymmetric case is non-unique due to the existence of…
On anharmonic stabilisation equations for black holes
Pietro Galli, Kevin Goldstein, Jan Perz
We investigate the stabilisation equations for sufficiently general, yet regular, extremal (supersymmetric and non-supersymmetric) and non-extremal black holes in four-dimensional…
Generalizations of Maxwell (super)algebras by the expansion method
J. A. de Azcarraga, J. M. Izquierdo, J. Lukierski +1
The Lie algebras expansion method is used to show that the Maxwell (super)algebras and some of their generalizations can be derived in a simple way as particular expansions of o(3,…
Quadratic deformation of Minkowski space
D. Cervantes, R. Fioresi, M. A. Lledo +1
We present a deformation of the Minkowski space as embedded into the conformal space (in the formalism of twistors) based in the quantum versions of the corresponding kinematic gro…
Khronon inflation
Paolo Creminelli, Jorge Noreña, Manuel Peña +1
We study the possibility that the approximate time shift symmetry during inflation is promoted to the full invariance under time reparametrization t \to \tilde t(t), or equivalentl…