Slow-roll approximations for Gauss-Bonnet inflation revisited
Fuente:
arXiv
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| Autori principali: | , , |
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| Natura: | Preprint |
| Pubblicazione: |
2026
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| _version_ | 1866915763789496320 |
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| author | Rudenko, Bogdan A. Skugoreva, Maria A. Toporensky, Alexey V. |
| author_facet | Rudenko, Bogdan A. Skugoreva, Maria A. Toporensky, Alexey V. |
| contents | In our paper we consider the validity of slow-roll approximations for Gauss-Bonnet inflation introduced in [1]. In contrast to the cited paper where the coupling function before the Gauss-Bonnet term have been chosen as a decaying function of the scalar field, here we consider growing coupling functions. We have found that while in [1] new slow-roll approximations work considerably better, now they do not increase the precision. Moreover, we identify some cases where more involved approximations work worse than the standard one. Corresponding explanations of such a situation are given. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2601_23256 |
| institution | arXiv |
| publishDate | 2026 |
| record_format | arxiv |
| spellingShingle | Slow-roll approximations for Gauss-Bonnet inflation revisited Rudenko, Bogdan A. Skugoreva, Maria A. Toporensky, Alexey V. General Relativity and Quantum Cosmology In our paper we consider the validity of slow-roll approximations for Gauss-Bonnet inflation introduced in [1]. In contrast to the cited paper where the coupling function before the Gauss-Bonnet term have been chosen as a decaying function of the scalar field, here we consider growing coupling functions. We have found that while in [1] new slow-roll approximations work considerably better, now they do not increase the precision. Moreover, we identify some cases where more involved approximations work worse than the standard one. Corresponding explanations of such a situation are given. |
| title | Slow-roll approximations for Gauss-Bonnet inflation revisited |
| topic | General Relativity and Quantum Cosmology |
| url | https://arxiv.org/abs/2601.23256 |