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GR: Fachverband Gravitation und Relativitätstheorie

GR 1: Schwarze Löcher I

GR 1.5: Vortrag

Montag, 25. Februar 2013, 15:00–15:15, HS 6

Geometrothermodynamics of Kerr-Newman Black Hole with Cosmological Constant as Thermodynamic Varible — •Mojica Sindy¹ and Larrañaga Alexis² — ¹Institut Für Physik, Universität Oldenburg, Germany — ²Universidad Nacional de Colombia, Colombia, Bogotá

The thermodynamics of the Kerr-AdS black hole is reformulated within the context of the formalism of geometrothermodynamics(GTD), developed by Hernando Quevedo. We use the Quevedo's invariant metric G associated to thermodynamics phase space τ and the metric g corresponding to space of a thermodynamics state of equilibrium ε, induced from τ through a Legendre transformation in order to study the possible phase transitions as a divergence of curvature scalar which is compared with the heat capacity. We show is possible find phase transitions. However, considering the cosmological constant like a variable state does not generated a new phase transitions.