Signature Change in $f(R, T_\phi)$ Theory
General Relativity and Quantum Cosmology
2026-03-10 v1
Abstract
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 in general relativity. In particular, we identify a class of solutions that exhibits a smooth transition from a Euclidean to a Lorentzian domain, thus yielding a classical dynamical realization of signature change.
Cite
@article{arxiv.2603.08410,
title = {Signature Change in $f(R, T_\phi)$ Theory},
author = {Serkan Doruk Hazinedar and Yaghoub Heydarzade},
journal= {arXiv preprint arXiv:2603.08410},
year = {2026}
}
Comments
14 pages, dedicated to Metin Gurses on the occasion of his becoming an emeritus professor after 60 years of research and teaching