81 citations · 626 across the 33 of their papers we have counts for
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hep-th2003★ 6 cited
Towards the entropy of gravity time-dependent models via the Cardy-Verlinde formula
Octavio Obregon, Leonardo Patino, Hernando Quevedo
For models with several time-dependent components generalized entropies can be defined. This is shown for the Bianchi type IX model. We first derive the Cardy-Verlinde formula unde…
hep-th2003★ 81 cited
Noncommutative Self-dual Gravity
H. Garcia-Compean, O. Obregon, C. Ramirez +1
Starting from a self-dual formulation of gravity, we obtain a noncommutative theory of pure Einstein theory in four dimensions. In order to do that, we use Seiberg-Witten map. It i…