147 citations · 756 across the 47 of their papers we have counts for
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Non-stationary Energy in General Relativity
Emel Altas, Bayram Tekin
Using the time evolution equations of (cosmological) General Relativity in the first order Fischer-Marsden form, we construct an integral that measures the amount of non-stationary…
Non-Einsteinian Black Holes in Generic 3D Gravity Theories
Metin Gurses, Tahsin Cagri Sisman, Bayram Tekin
The Bañados-Teitelboim-Zanelli (BTZ) black hole metric solves the three-dimensional Einstein's theory with a negative cosmological constant as well as all the generic higher deriva…
Exotic Massive Gravity: Causality and a Birkhoff-like Theorem
Ercan Kilicarslan, Bayram Tekin
We study the local causality issue via the Shapiro time-delay computations in the on-shell consistent exotic massive gravity in three dimensions. The theory shows time-delay as opp…
Second Order Perturbation Theory in General Relativity: Taub Charges as Integral Constraints
Emel Altas, Bayram Tekin
In a nonlinear theory, such as General Relativity, linearized field equations around an exact solution are necessary but not sufficient conditions for linearized solutions. Therefo…