Cosmological axial gravitational waves in the f(R) Starobinsky model

• Published in: European physical journal plus Vol. 136; no. 4; p. 415
• Main Authors: Siddiqa, Aisha, Mehwish, Syeda Z. B., Alves, Márcio E. S.
• Format: Journal Article
• Language: English
• Published: Berlin/Heidelberg Springer Berlin Heidelberg 20.04.2021; Springer Nature B.V
• Subjects: Applied and Technical Physics; Atomic; Black holes; Complex Systems; Condensed Matter Physics; Cosmology; Dark energy; Differential equations; Evolution; Exact solutions; Gravitational waves; Initial conditions; Mathematical and Computational Physics; Mathematical models; Molecular; Optical and Plasma Physics; Parameters; Parity; Perturbation; Physics; Physics and Astronomy; Propagation; Radiation; Regular Article; Relativity; Spacetime; Tensors; Theoretical; Theory of relativity; Universe

We investigate the propagation of cosmological axial (or odd parity) gravitational waves (GWs) in the framework of the f ( R ) gravity with f ( R ) = R + λ R 2 , the Starobinsky model. The metric tensor and the energy–momentum tensor of matter are perturbed by using the Regge–Wheeler axial perturbat...