Kantowski–Sachs cosmology in scalar-torsion theory
Abstract In the context of scalar-torsion theory we investigate the evolution of the cosmological anisotropies for a Kantowski–Sachs background geometry. We study the phase-space of the gravitational field equations by determining the admitted stationary points and study their stability properties....
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| Format: | Article |
| Language: | English |
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SpringerOpen
2023-03-01
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| Series: | European Physical Journal C: Particles and Fields |
| Online Access: | https://doi.org/10.1140/epjc/s10052-023-11342-z |
| _version_ | 1797836271111897088 |
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| author | Andronikos Paliathanasis |
| author_facet | Andronikos Paliathanasis |
| author_sort | Andronikos Paliathanasis |
| collection | DOAJ |
| description | Abstract In the context of scalar-torsion theory we investigate the evolution of the cosmological anisotropies for a Kantowski–Sachs background geometry. We study the phase-space of the gravitational field equations by determining the admitted stationary points and study their stability properties. For the potential function of the non-minimally coupled scalar field we assume the exponential and the power-law functions. Finally, we make use of Poincare variables in order to investigate the existence of stationary points at the infinity regime of the dynamics. |
| first_indexed | 2024-04-09T15:07:14Z |
| format | Article |
| id | doaj.art-41ba0afc40304afd95c51fe8c5ec0b21 |
| institution | Directory Open Access Journal |
| issn | 1434-6052 |
| language | English |
| last_indexed | 2024-04-09T15:07:14Z |
| publishDate | 2023-03-01 |
| publisher | SpringerOpen |
| record_format | Article |
| series | European Physical Journal C: Particles and Fields |
| spelling | doaj.art-41ba0afc40304afd95c51fe8c5ec0b212023-04-30T11:25:59ZengSpringerOpenEuropean Physical Journal C: Particles and Fields1434-60522023-03-0183311410.1140/epjc/s10052-023-11342-zKantowski–Sachs cosmology in scalar-torsion theoryAndronikos Paliathanasis0Institute of Systems Science, Durban University of TechnologyAbstract In the context of scalar-torsion theory we investigate the evolution of the cosmological anisotropies for a Kantowski–Sachs background geometry. We study the phase-space of the gravitational field equations by determining the admitted stationary points and study their stability properties. For the potential function of the non-minimally coupled scalar field we assume the exponential and the power-law functions. Finally, we make use of Poincare variables in order to investigate the existence of stationary points at the infinity regime of the dynamics.https://doi.org/10.1140/epjc/s10052-023-11342-z |
| spellingShingle | Andronikos Paliathanasis Kantowski–Sachs cosmology in scalar-torsion theory European Physical Journal C: Particles and Fields |
| title | Kantowski–Sachs cosmology in scalar-torsion theory |
| title_full | Kantowski–Sachs cosmology in scalar-torsion theory |
| title_fullStr | Kantowski–Sachs cosmology in scalar-torsion theory |
| title_full_unstemmed | Kantowski–Sachs cosmology in scalar-torsion theory |
| title_short | Kantowski–Sachs cosmology in scalar-torsion theory |
| title_sort | kantowski sachs cosmology in scalar torsion theory |
| url | https://doi.org/10.1140/epjc/s10052-023-11342-z |
| work_keys_str_mv | AT andronikospaliathanasis kantowskisachscosmologyinscalartorsiontheory |