2 papers
gr-qc2026
Signature Change in Theory
Serkan Doruk Hazinedar, Yaghoub Heydarzade
We investigate a simple gravity model coupled to a scalar field and demonstrate that the theory admits classical degenerate metric solutions, analogous to those known i…
gr-qc2024
Non-Vacuum Solutions in Cotton Theory
Serkan Doruk Hazinedar, Yaghoub Heydarzade, Maryam Ranjbar
Cotton theory (CT) introduces a higher derivative extension of General Relativity (GR) characterized by third-rank field equations. Recently, key distinctions between CT and GR con…