2 papers
gr-qc2023
Conformal Symmetries of the Strumia and Tetradis Metric
Pantelis S. Apostolopoulos, Christos Tsipogiannis
In a recent paper, a new conformally flat metric was introduced, describing an expanding scalar field in a spherically symmetric geometry. The spacetime can be interpreted as a Sch…
gr-qc2022
A positive cosmological constant as a geometrical artifact
Pantelis S. Apostolopoulos, Christos Tsipogiannis
We revisit the classical mechanism to produce dimensional spacetimes via Kaluza-Klein compactification. We made the assumption that the dimensional bulk geo…