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https://www.um.edu.mt/library/oar/handle/123456789/121533
Title: | Dynamical systems in Einstein Gauss-Bonnet gravity |
Authors: | Dialektopoulos, Konstantinos F. Said, Jackson Oikonomopoulou, Zinovia |
Keywords: | Gravitation -- Mathematical models Cosmology -- Mathematical models Perturbation (Astronomy) Gauss-Bonnet theorem Differential equations |
Issue Date: | 2022 |
Citation: | Dialektopoulos, K. F., Said, J. L., & Oikonomopoulou, Z. (2022). Dynamical systems in Einstein Gauss-Bonnet gravity. arXiv preprint arXiv:2211.06076. |
Abstract: | In this work we explore the dynamical system phase space of Einstein-Gauss-Bonnet theory in the cosmological minisuperspace. This approach binds the main features of the theory through a system of autonomous differential equations, in the context of a flat Friedmann-LemaƮtre-Robertson-Walker spacetime. We analyze the critical points that feature in this system to assess their stability criteria. The phase space of this form of scalar-tensor gravity is very rich due to the fourth-order contributions of the Gauss-Bonnet invariant together with the second order contribution of the scalar field together with their coupling dynamics. We find additional critical points as compared with previous works in the literature which may be important for understanding the larger evolution of standard background cosmology within this class of gravitational models. |
URI: | https://www.um.edu.mt/library/oar/handle/123456789/121533 |
Appears in Collections: | Scholarly Works - InsSSA |
Files in This Item:
File | Description | Size | Format | |
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Dynamical_systems_in_Einstein_Gauss-Bonnet_gravity(2022).pdf | 1.42 MB | Adobe PDF | View/Open |
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