4 papers
Quantum Cosmology in Bergmann-Wagoner Scalar-tensor Gravitational Theory
Luis O. Pimentel, Cesar Mora
The Wheeler-DeWitt equation is solved for the Bergmann-Wagoner scalar-tensor gravitational theory in the case of Friedmann-Robertson- Walker cosmological model. We present solution…
Quantum Cosmology in some Scalar-tensor Theories
Luis O. Pimentel, César Mora
The Wheeler-DeWitt equation is solved for some scalar-tensor theories of gravitation in the case of homogeneous and isotropic cosmological models.We present general solutions corre…
Cosmic Strings from N=2, D=5 Supergravity
Pimentel L O
Exact solutions of N=2 supergravity in five dimensions are found in the metric with cylindrical symmetry, a particular case corresponds to the exterior of a cosmic string.
Weyl Equation in GÖdel Type Universes
Pimentel L O, Camacho A, Macias A
The Weyl equation (massless Dirac equation) is studied in a family of metrics of the Gödel type. The field equation is solved exactly for one member of the family.