89 citations · 452 across the 16 of their papers we have counts for
17 papers
Constructing allowed complex metrics from black holes
Oscar Loaiza-Brito, J. L. López-Picón, Octavio Obregón
We use diffeomorphic mappings to connect black hole metrics with complex solutions allowed by the Kontsevich-Segal criterion. By swapping radial and time-like coordinates and apply…
Quantum cosmology in Hořava-Lifshitz gravity
O. Obregón, J. A. Preciado
Quantum cosmology is studied within the framework of the minimal quantum gravity theory proposed by Hořava. For this purpose we choose the Kantowski-Sachs (KS) model and construct…
Toward Supergravity Spectral Action
J. L. López, O. Obregón, M. P. Ryan +1
A spectral action of Euclidean supergravity is proposed. We calculate up to , the Seeley-Dewitt coefficients in the expansion of the spectral action associated to the supergra…
Unveiling the tachyon dynamics in the Carrollian limit
Celia Escamilla-Rivera, G. Garcia-Jimenez, O. Obregon
We briefly study the dynamics at classical level of the Carrollian limit, with vanishing speed of light and no possible propagation of signals, for a simply effective action in a f…
Towards a Supersymmetric Generalization of the Schwarzschild Black Hole
J. C. López-Domínguez, O. Obregón, S. Zacarías
The Wheeler-DeWitt (WDW) equation for the Kantowski-Sachs model can also be understood as the WDW-equation corresponding to the Schwarzschild black hole due to the well known diffe…
Twisted Covariant Noncommutative Self-dual Gravity
S. Estrada-Jimenez, H. Garcia-Compean, O. Obregon +1
A twisted covariant formulation of noncommutative self-dual gravity is presented. The formulation for constructing twisted noncommutative Yang-Mills theories is used. It is shown t…