One of the remarkable outcomes of the AdS/CFT correspondence has been the generalization of Cardyâ€™s entropy formula for arbitrary dimensionality, as well as a variety of anti-de Sitter scenarios.â€¦ (More)

There has been substantial interest in obtaining a quantum-gravitational description of de Sitter space. However, any such attempts have encountered formidable obstacles, and new philosophicalâ€¦ (More)

We consider a brane universe in an asymptotically de Sitter background spacetime of arbitrary dimensionality. In particular, the bulk spacetime is described by a " topological de Sitter " solution,â€¦ (More)

There has been some recent controversy regarding the Ruppeiner metrics that are induced by Reissnerâ€“Nordstrom (and Reissnerâ€“Nordstrom-like) black holes. Most infamously, why does this family ofâ€¦ (More)

Recently, investigations have begun into a holographic duality for two-dimensional de Sitter space. In this paper, we evaluate the associated central charge, using a modified version of the canonicalâ€¦ (More)

We consider one-loop quantum corrections to the thermodynamics of a black hole in generic 2-dimensional dilaton gravity. The classical action is the most general diffeomorphism invariant action inâ€¦ (More)

Hawking radiation can usefully be viewed as a semi-classical tunneling process that originates at the black hole horizon. The same basic premise should apply to de Sitter background radiation, withâ€¦ (More)

Some recent literature has considered the holographic-induced cosmology of a brane universe in the background of an anti-de Sitter-black hole geometry. In this regard, curved-brane scenarios haveâ€¦ (More)

In view of our accelerating universe, one of the outstanding theoretical issues is the absence of a quantum-gravitational description of de Sitter space. Although speculative, an intriguingâ€¦ (More)

In this paper, we investigate the near-extremal thermodynamics of the Reissner-Nordstrom (RN) black hole. Our methodology is based on a duality that exists between the near-horizon geometry of theâ€¦ (More)