2 citations · 2 across the 5 of their papers we have counts for
4 papers · 1 filter
Orbifolds, Quantum Cosmology, and Nontrivial Topology
Helio V. Fagundes, Teofilo Vargas
In order to include nontrivial spatial topologies in the problem of quantum creation of a universe, it seems to be necessary to generalize the sum over compact, smooth 4-manifolds…
Quantum Creation of a Universe with Quasi-Hyperbolic Spatial Sections
Helio V. Fagundes, Teofilo Vargas
We calculate the probability of creation of a universe with space topology , where is the circle and is a compact hyperbolic surface of genus $g\…
Exploring the global topology of the universe
Helio V. Fagundes
In this talk work done by our group on cosmic topology is reviewed. It ranges from early attempts to solve a famous controversy about quasars through the multiplicity of images, to…
Addendum to Paper "Closed Spaces in Cosmology"
Helio V. Fagundes
A few corrections and comments are made upon a previously published paper by the author (Gen. Rel. Gravit. 24, 199 (1992)), on the subject of cosmological models with compact spati…