2 papers
gr-qc2026
The Flat Critical Branch Between Nariai and Bertotti-Robinson Geometries as a Solution of Cosmological Einstein-Maxwell Theory
Metin Gurses, Tahsin Cagri Sisman, Bayram Tekin
We analyze a class of product geometries of the form supported by electric, magnetic, or dyonic flux in the Einstein-Maxwell- theory. These spacet…
gr-qc2026
Almost Universal Metrics
Metin Gurses, Tahsin Cagri Sisman, Bayram Tekin
A metric is called universal if every symmetric conserved rank-two tensor constructed locally from the metric, the curvature, and covariant derivatives of the curvature is proporti…