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Paper   IPM / Physic / 7359
School of Physics
  Title:   The Cardy-Verlinde Formula and Entropy of Black Holes in de Sitter Spaces
  Author(s):  M.R. Setare
  Status:   Published
  Journal: Vestnik of Tomsk State Pedagogical University
  Vol.:  7
  Year:  2004
  Pages:   5-10
  Supported by:  IPM
  Abstract:
In this paper we show that the entropy of a cosmological horizon in topological Reissner-Nordström- de Sitter and Kerr-Newman-de Sitter spaces can be described by the Cardy-Verlinde formula, which is supposed to be an entropy formula of conformal field theory in any number of dimension. Furthermore, we find that the entropy of a black hole horizon can also be rewritten in terms of the Cardy-Verlinde formula for these black holes in de Sitter spaces, if we use the definition due to Abbott and Deser for conserved charges in asymptotically de Sitter spaces. Such result presume a well-defined dS/CFT correspondence, which has not yet attained the credibility of its AdS analogue.

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