Noether symmetries in f(G) gravity
- Authors: Sharif M.1, Ismat Fatima H.1
-
Affiliations:
- Deportment of Mathematics
- Issue: Vol 122, No 1 (2016)
- Pages: 104-112
- Section: Nuclei, Particles, Fields, Gravitation, and Astrophysics
- URL: https://journals.rcsi.science/1063-7761/article/view/189688
- DOI: https://doi.org/10.1134/S1063776116010192
- ID: 189688
Cite item
Abstract
We explore Noether symmetries of the Friedmann–Robertson–Walker universe model in modified Gauss–Bonnet gravity for both vacuum and nonvacuum (dust fluid) cases. We evaluate symmetry generators and the corresponding conserved quantities by using separation of variables and a power-law form. We construct exact f(G) models and study accelerating expansion of the universe in terms of a scale factor, deceleration, and the EoS parameters. We also check the validity of energy conditions through the weak energy conditions for our constructed model. The state finder parameters indicate the resemblance of our constructed models to the ΛCDM model. We conclude that our results are consistent with the recent astrophysical observations.
About the authors
M. Sharif
Deportment of Mathematics
Author for correspondence.
Email: msharif.math@pu.edu.pk
Pakistan, Lahore, 54590
H. Ismat Fatima
Deportment of Mathematics
Email: msharif.math@pu.edu.pk
Pakistan, Lahore, 54590
Supplementary files
