Non-geometrical perturbation on homogeneous stealth dust
Fuente:
arXiv
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| Autores principales: | , , , |
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| Formato: | Preprint |
| Publicado: |
2025
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| Materias: | |
| Acceso en línea: | |
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| _version_ | 1866908333319913472 |
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| author | Blanco, José Campuzano, Cuauhtemoc Corona-Oran, J. C. Cárdenas, Víctor H. |
| author_facet | Blanco, José Campuzano, Cuauhtemoc Corona-Oran, J. C. Cárdenas, Víctor H. |
| contents | In this work, we study a non-geometrical perturbation to the stealth field, which means the background remains invariant. The stealh is homogeneous in a universe whose source is dust and demand that perturbation unchanged density. As a regular procedure, we introduce a parameter $λ$ to perturb the scalar field equation and get an intriguing expression of the equation, similar to a series expansion in $λ$. From this procedure, we distinguish and approach to discriminate solutions, and the numerical solutions show that the most significant contribution to the solution comes from the linear term of $λ$. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2504_16313 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Non-geometrical perturbation on homogeneous stealth dust Blanco, José Campuzano, Cuauhtemoc Corona-Oran, J. C. Cárdenas, Víctor H. General Relativity and Quantum Cosmology High Energy Physics - Theory In this work, we study a non-geometrical perturbation to the stealth field, which means the background remains invariant. The stealh is homogeneous in a universe whose source is dust and demand that perturbation unchanged density. As a regular procedure, we introduce a parameter $λ$ to perturb the scalar field equation and get an intriguing expression of the equation, similar to a series expansion in $λ$. From this procedure, we distinguish and approach to discriminate solutions, and the numerical solutions show that the most significant contribution to the solution comes from the linear term of $λ$. |
| title | Non-geometrical perturbation on homogeneous stealth dust |
| topic | General Relativity and Quantum Cosmology High Energy Physics - Theory |
| url | https://arxiv.org/abs/2504.16313 |