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26 papers · 1 filter
Hairy black hole entropy and the role of solitons in three dimensions
Francisco Correa, Cristian Martinez, Ricardo Troncoso
Scalar fields minimally coupled to General Relativity in three dimensions are considered. For certain families of self-interaction potentials, new exact solutions describing solito…
Gauss-Bonnet braneworld redux: A novel scenario for the bouncing universe
Hideki Maeda
We propose a new scenario for the bouncing universe in a simple five-dimensional braneworld model in the framework of Einstein-Gauss-Bonnet gravity, which works even with ordinary…
Gribov pendulum in the Coulomb gauge on curved spaces
Fabrizio Canfora, Alex Giacomini, Julio Oliva
In this paper the generalization of the Gribov pendulum equation in the Coulomb gauge for curved spacetimes is analyzed on static spherically symmetric backgrounds. A rigorous argu…
Real forms of extended Kac-Moody symmetries and higher spin gauge theories
Marc Henneaux, Axel Kleinschmidt, Hermann Nicolai
We consider the relation between higher spin gauge fields and real Kac-Moody Lie algebras. These algebras are obtained by double and triple extensions of real forms g_0 of the fini…
Supersymmetry of a different kind
Pedro D. Alvarez, Mauricio Valenzuela, Jorge Zanelli
A local supersymmetric action for a (2+1)-dimensional system including gravity, the electromagnetic field and a Dirac spin-1/2 field is presented. The action is a Chern-Simons form…
Electric charge in the field of a magnetic event in three-dimensional spacetime
Claudio Bunster, Cristian Martinez
We analyze the motion of an electric charge in the field of a magnetically charged event in three-dimensional spacetime. We start by exhibiting a first integral of the equations of…