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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 spacetim…
gr-qc2026
Static Tidal Perturbations of Relativistic Stars: Corrected Center Expansion and Love Numbers-I
Emel Altas, Ercan Kilicarslan, Onur Oktay +1
We revisit static tidal perturbations of relativistic stars with emphasis on two technical issues in the standard quadrupolar formulation. First, we derive the regular-center Frobe…
gr-qc2026
Geometry is Wavy: Curvature Wave Equations for Generic Affine Connections
Emel Altas, Bayram Tekin
Geometry is wavy: even at the purely geometric level (no particular theory chosen), curvature satisfies a covariant quasilinear wave equation. In Riemannian geometry equipped with…