TL;DR
This paper investigates pp-wave solutions within various modified gravity theories using a differential forms approach, providing a comprehensive and coherent analysis of these gravitational wave metrics.
Contribution
It offers a systematic study of pp-wave metrics in modified gravity models employing a null coframe and exterior algebra, enhancing understanding of gravitational waves in alternative theories.
Findings
Characterization of pp-wave solutions in modified gravity
Unified framework using differential forms and null coframe
Insights into gravitational wave properties beyond General Relativity
Abstract
The family of metrics corresponding to the plane-fronted gravitational waves with parallel propagation, commonly referred to as the family of pp-wave metrics, is studied in the context of various modified gravitational models in a self-contained and coherent manner by using a variant of the null coframe formulation of Newman and Penrose and the exterior algebra of differential forms on pseudo-Riemannian manifolds.
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