Introduction to the number of $e$-folds in slow-roll inflation
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arXiv
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| Format: | Preprint |
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2024
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| _version_ | 1866909279495127040 |
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| author | Di Marco, Alessandro Orazi, Emanuele Pradisi, Gianfranco |
| author_facet | Di Marco, Alessandro Orazi, Emanuele Pradisi, Gianfranco |
| contents | In this review, a pedagogical introduction to the concepts of slow-roll inflationary Universe and number of $e$-folds is provided. In particular, the differences between the basic notion of number of $e$-folds ($N_e$), total number of $e$-folds ($N_T$) and number of $e$-folds before the end of inflation ($N$), are outlined. The proper application of the number of $e$-folds before the end of inflation is discussed both as a time-like variable for the scalar field evolution and as a key parameter for computing inflationary predictions. |
| format | Preprint |
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arxiv_https___arxiv_org_abs_2408_01854 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Introduction to the number of $e$-folds in slow-roll inflation Di Marco, Alessandro Orazi, Emanuele Pradisi, Gianfranco Cosmology and Nongalactic Astrophysics General Relativity and Quantum Cosmology High Energy Physics - Theory In this review, a pedagogical introduction to the concepts of slow-roll inflationary Universe and number of $e$-folds is provided. In particular, the differences between the basic notion of number of $e$-folds ($N_e$), total number of $e$-folds ($N_T$) and number of $e$-folds before the end of inflation ($N$), are outlined. The proper application of the number of $e$-folds before the end of inflation is discussed both as a time-like variable for the scalar field evolution and as a key parameter for computing inflationary predictions. |
| title | Introduction to the number of $e$-folds in slow-roll inflation |
| topic | Cosmology and Nongalactic Astrophysics General Relativity and Quantum Cosmology High Energy Physics - Theory |
| url | https://arxiv.org/abs/2408.01854 |