A scaling invariance of the perturbations in $k$-inflation models
Fuente:
arXiv
Guardado en:
| Autores principales: | , , , , |
|---|---|
| Formato: | Preprint |
| Publicado: |
2025
|
| Materias: | |
| Acceso en línea: | |
| Etiquetas: |
Agregar Etiqueta
Sin Etiquetas, Sea el primero en etiquetar este registro!
|
| _version_ | 1866913799094665216 |
|---|---|
| author | Bilić, Neven Dimitrijević, Dragoljub D. Djordjevic, Goran S. Milošević, Milan Stojanović, Marko |
| author_facet | Bilić, Neven Dimitrijević, Dragoljub D. Djordjevic, Goran S. Milošević, Milan Stojanović, Marko |
| contents | We study the background and perturbations in $k$-essence inflation models and show that a general $k$-essence exhibits a simple scaling property. In particular, we study two classes of $k$-inflation models with the potential characterized by an inflection point. We demonstrate that these models enjoy scaling properties that could be used to redefine input parameters so that the perturbation spectra satisfy correct normalization at the CMB pivot scale. The background and perturbation equations are integrated numerically for two specific models. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2502_06456 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | A scaling invariance of the perturbations in $k$-inflation models Bilić, Neven Dimitrijević, Dragoljub D. Djordjevic, Goran S. Milošević, Milan Stojanović, Marko General Relativity and Quantum Cosmology Cosmology and Nongalactic Astrophysics We study the background and perturbations in $k$-essence inflation models and show that a general $k$-essence exhibits a simple scaling property. In particular, we study two classes of $k$-inflation models with the potential characterized by an inflection point. We demonstrate that these models enjoy scaling properties that could be used to redefine input parameters so that the perturbation spectra satisfy correct normalization at the CMB pivot scale. The background and perturbation equations are integrated numerically for two specific models. |
| title | A scaling invariance of the perturbations in $k$-inflation models |
| topic | General Relativity and Quantum Cosmology Cosmology and Nongalactic Astrophysics |
| url | https://arxiv.org/abs/2502.06456 |