Dynamics and exact Bianchi I spacetimes in Einstein-aether scalar field theory
arXiv:2004.08663 · doi:10.1140/epjc/s10052-020-8148-7
Abstract
We determine exact and analytic solutions of the gravitational field equations in Einstein-aether scalar model field with a Bianchi I background space. In particular, we consider nonlinear interactions of the scalar field with the aether field. For the model under consideration we can write the field equations by using the minisuperspace description. The point-like Lagrangian of the field equations depends on three unknown functions. We derive conservation laws for the field equations for specific forms of the unknown functions such that the field equations are Liouville integrable. Furthermore, we study the evolution of the field equations and the evolution of the anisotropies by determining the equilibrium points and analyzing their stability.
19 pages, 1 compound figure (4 subfigures)
References in corpus (17)
- Dynamics of dark energy
- Cosmological Solutions of Gravity
- Probing cosmic isotropy with a new X-ray galaxy cluster sample through the scaling relation
- Using the Noether symmetry approach to probe the nature of dark energy
- Dynamical behavior in mimetic F(R) gravity
- Dynamics of Quintessence Models of Dark Energy with Exponential Coupling to the Dark Matter
- Power-laws f(R) theories are cosmologically unacceptable
- Lorentz Violating Inflation
- Hidden Symmetries of Dynamics in Classical and Quantum Physics
- Further Exact Cosmological Solutions to Higher-Order Gravity Theories
- Dynamics and cosmological evolution in Λ-varying cosmology
- Cosmic alignment of the aether
- Einstein-aether theory with a Maxwell field: General formalism
- Stability of Einstein-Aether Cosmological Models
- Decoupling of the general scalar field mode and the solution space for Bianchi type I and V cosmologies coupled to perfect fluid sources
- Phase Space of Anisotropic Cosmologies
- Analytic solutions in Einstein-aether scalar field cosmology