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hep-th2007★ 58 cited
Crossing the phantom divide in an interacting generalized Chaplygin gas
H. Garcia-Compean, G. Garcia-Jimenez, O. Obregon +1
Unified generalized Chaplygin gas models assuming an interaction between dark energy and dark matter fluids have been previously proposed. Following these ideas, we consider a part…
hep-th2000
Searching for S-duality in Gravitation
H. Garcia-Compean, O. Obregon, C. Ramirez
We overview some attempts to find S-duality analogues of non-supersymmetric Yang-Mills theory, in the context of gravity theories. The case of MacDowell-Mansouri gauge theory of gr…