Publications (20)
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…
Noncommutative Topological Theories of Gravity
H. Garcia-Compean, O. Obregon, C. Ramirez +1
The possibility of noncommutative topological gravity arising in the same manner as Yang-Mills theory is explored. We use the Seiberg-Witten map to construct such a theory based on…
Pursuing Gravitational S-Duality
H. Garcia-Compean, O. Obregon, C. Ramirez
Recently a strong-weak coupling duality in non-abelian non-supersymmetric theories in four dimensions has been found. An analogous procedure is reviewed, which allows to find the `…
Supergroup BF action for supergravity
C. Ramirez, E. Rosales
General relativity can be formulated as a SU(2) BF-theory with constraints, as has been shown, by PlebaÅski. The cosmological constant term can be obtained from the constraint ter…
Remarks on 2+1 Self-dual Chern-Simons Gravity
H. Garcia-Compean, O. Obregon, C. Ramirez +1
We study 2+1 Chern-Simons gravity at the classical action level. In particular we rederive the linear combinations of the ``standard'' and ``exotic'' Einstein actions, from the (an…
Gravitational Duality in MacDowell-Mansouri Gauge Theory
H. Garcia-Compean, O. Obregon, C. Ramirez
Strong-weak duality invariance can only be defined for particular sectors of supersymmetric Yang-Mills theories. Nevertheless, for full non-Abelian non-supersymmetric theories, dua…