Examinando por Autor "Olea, R"

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  • Miniatura
    Ítem
    Constant curvature black holes in Einstein-AdS gravity: Conserved quantities
    (AMER PHYSICAL SOC., 2017-06) Guilleminot, P; Olea, R; Petrov, AN
    We study physical properties of constant curvature black holes in Einstein–anti-de Sitter (AdS) gravity. These objects, which are locally AdS throughout the space, are constructed from identifications of global AdS spacetime, in a similar fashion as the Banados-Teitelboim-Zanelli black hole in three dimensions. We find that, in dimensions equal to or greater than 4, constant curvature black holes have zero mass and angular momentum. Only in odd dimensions are we able to associate a nonvanishing conserved quantity to these solutions, which corresponds to the vacuum (Casimir) energy of the spacetime.
  • Miniatura
    Ítem
    Topological invariants and the definition of energy in quadratic gravity theory
    (American Physical Society, 2020-03) G, Giribet; O, Miskovic; Olea, R; Rivera Betancour, D
    Abstract We provide a simple method to compute the energy in higher curvature gravity in asymptotically AdS spacetimes in even dimensions. It follows from the combined use of topological terms added to the gravity action, and the Wald charges derived from the augmented action functional. No additional boundary terms are needed. As a consistency check, we show that the formula for the conserved quantities derived in this way yields the correct result for the mass of asymptotically AdS black holes. © 2020 authors. Published by the American Physical Society. Learn about these Topics