6 papers
The semi classical cosmology approximation for a Friedman Robertson Walker geometry coupled to a field
Jose L. Martinez-Morales
The semi classical cosmology approximation for a Friedman Robertson Walker geometry coupled to a field is considered. A power series of the field with coefficients that depend on t…
The Einstein's linear equation of a space-time with a homogeneous section of low dimension
Jose L. Martinez-Morales
The Einstein's linear equation of a small perturbation in a space-time with a homogeneous section of low dimension, is studied. For every harmonic mode of the horizon, there are tw…
The perturbation equation of a static symmetrical homogeneous space-time
Jose L. Martinez-Morales
In absence of explicit solutions of the perturbation equation of a static symmetrical homogeneous space-time, the best we can do is to construct a {\it quasi-}transformation. In th…
The Feynman integral as a limit of complex measures
Jose L. Martinez-Morales
The fundamental solution of the Schrödinger equation for a free particle is a distribution. This distribution can be approximated by a sequence of smooth functions. It is defined f…
The equation of eigen-values in a general Euclidean Schwarzschild metric
Jose L. Martinez-Morales
A metric more general than the Euclidean Schwarzschild-Tangherlini metric is considered. The cosmological constant is not necessarily Zero, and the hypersphere is replaced by an Ei…
A static Einstein metric that generalizes the Schwarzschild metric
José L. Martínez-Morales
A static Einstein metric that generalizes the Schwarzschild metric is considered. The event horizon is not necessarily a sphere and the term $dt\sp2$ is a function on such horizon.…