تقرير
Reconstruction methods and the amplification of the inflationary spectrum
| العنوان: | Reconstruction methods and the amplification of the inflationary spectrum |
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| المؤلفون: | Chataignier, Leonardo, Kamenshchik, Alexander Yu., Tronconi, Alessandro, Venturi, Giovanni |
| سنة النشر: | 2023 |
| المجموعة: | Astrophysics General Relativity and Quantum Cosmology High Energy Physics - Theory |
| مصطلحات موضوعية: | General Relativity and Quantum Cosmology, Astrophysics - Cosmology and Nongalactic Astrophysics, High Energy Physics - Theory |
| الوصف: | We analyze the consequences of different evolutions of the Hubble parameter on the spectrum of scalar inflationary perturbations. The analysis is restricted to inflationary phases described by a transient evolution, when uncommon features arise in the inflationary spectra that may lead to an amplitude enhancement. We then discuss how the spectrum is, respectively, amplified or blue-tilted in the presence or absence of a growing solution of the Mukhanov-Sasaki equation. The cases of general relativity with a minimally coupled inflaton and that of induced gravity are considered explicitly. Finally, some remarks on constant roll inflation are discussed. Comment: references updated, conceptual clarifications added. Matches published version |
| نوع الوثيقة: | Working Paper |
| DOI: | 10.1103/PhysRevD.107.083506 |
| URL الوصول: | http://arxiv.org/abs/2301.04477 |
| رقم الأكسشن: | edsarx.2301.04477 |
| قاعدة البيانات: | arXiv |
| DOI: | 10.1103/PhysRevD.107.083506 |
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