Cosmological Dynamics in Interacting Scalar-Torsion f(T,$ϕ$) Gravity: Investigating Energy and Momentum Couplings
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| Main Authors: | , , , |
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| Format: | Preprint |
| Published: |
2024
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| _version_ | 1866910812859269120 |
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| author | Rodriguez-Benites, Carlos Gonzalez-Espinoza, Manuel Otalora, Giovanni Alva-Morales, Manuel |
| author_facet | Rodriguez-Benites, Carlos Gonzalez-Espinoza, Manuel Otalora, Giovanni Alva-Morales, Manuel |
| contents | We investigate the cosmological dynamics of a homogeneous scalar field non-minimally coupled to torsion gravity, which also interacts with cold dark matter through energy and momentum transfer. The matter and radiation perfect fluids are modeled using the Sorkin-Schutz formalism. We identify scaling regimes of the field during both the radiation and matter eras. Additionally, we discovered a field-dominated scaling attractor; however, it does not exhibit accelerated expansion, making it unsuitable for describing dark energy. Nevertheless, we find two attractor solutions that do exhibit accelerated expansion: one is a quintessence-like fixed point, and the other is a de Sitter fixed point. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2408_14614 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Cosmological Dynamics in Interacting Scalar-Torsion f(T,$ϕ$) Gravity: Investigating Energy and Momentum Couplings Rodriguez-Benites, Carlos Gonzalez-Espinoza, Manuel Otalora, Giovanni Alva-Morales, Manuel General Relativity and Quantum Cosmology Cosmology and Nongalactic Astrophysics High Energy Physics - Theory We investigate the cosmological dynamics of a homogeneous scalar field non-minimally coupled to torsion gravity, which also interacts with cold dark matter through energy and momentum transfer. The matter and radiation perfect fluids are modeled using the Sorkin-Schutz formalism. We identify scaling regimes of the field during both the radiation and matter eras. Additionally, we discovered a field-dominated scaling attractor; however, it does not exhibit accelerated expansion, making it unsuitable for describing dark energy. Nevertheless, we find two attractor solutions that do exhibit accelerated expansion: one is a quintessence-like fixed point, and the other is a de Sitter fixed point. |
| title | Cosmological Dynamics in Interacting Scalar-Torsion f(T,$ϕ$) Gravity: Investigating Energy and Momentum Couplings |
| topic | General Relativity and Quantum Cosmology Cosmology and Nongalactic Astrophysics High Energy Physics - Theory |
| url | https://arxiv.org/abs/2408.14614 |