Teleparallel Gravity and Quintessence: The Role of Nonminimal Boundary Couplings
arXiv:2408.03417 · doi:10.1016/j.aop.2024.169808
Abstract
In this paper, we have outlined the development of an autonomous dynamical system within a general scalar-tensor gravity framework. This framework encompasses the overall structure of the non-minimally coupled scalar field functions for both the torsion scalar () and the boundary term (). We have examined three well-motivated forms of potential functions and constrained the model parameters through dynamical system analysis. This analysis has played a crucial role in identifying cosmologically viable models. We have analysed the behaviour of dynamical parameters such as equation-of-state parameters for dark energy and the total, as well as all the standard density parameters for radiation, matter, and dark energy to assess their compatibility with current observational data. The phase space diagrams are presented to support the stability conditions of the corresponding critical points. The Universe is apparent in its late-time cosmic acceleration phase via the dark energy-dominated critical points. Additionally, we compare our findings with the most prevailing CDM model. The outcomes are further inspected using the cosmological data sets of Supernovae Ia and the Hubble rate H(z).
30 pages, 18 figures, 5 tables
References in corpus (23)
- Dynamics of dark energy
- Cosmology and the Fate of Dilatation Symmetry
- Dark energy cosmology: the equivalent description via different theoretical models and cosmography tests
- Dark torsion as the cosmic speed-up
- Modified teleparallel gravity: inflation without inflaton
- Teleparallel Gravity: From Theory to Cosmology
- Cosmological Solutions of Gravity
- Dynamical Stability Analysis of Accelerating f(T) Gravity Models
- Scalar Tensor Teleparallel Dark Gravity via Noether Symmetry
- Cosmological dynamics of dark energy in scalar-torsion gravity
- Dynamical systems analysis in gravity
- Constraints on Cosmology with Pantheon+
- Generating primordial fluctuations from modified teleparallel gravity with local Lorentz-symmetry breaking
- Dynamical system analysis in teleparallel gravity with boundary term
- Cosmological models in gravity and the dynamical system analysis
- Dynamical systems analysis of tachyon dark energy model from a new perspective
- Dynamics in interacting scalar-torsion theory
- Generalized Tachyonic Teleparallel cosmology
- Revisiting the dynamics of interacting vector-like dark energy
- Noether Symmetry Approach in Scalar-Torsion Gravity
- Dynamical Complexity in Teleparallel Gauss-Bonnet Gravity
- Scalar field induced dynamical evolution in teleparallel gravity
- Screening fifth forces in scalar-vector-tensor theories