Quintessential inflation and cosmological seesaw mechanism: reheating and observational constraints
| Autor: | Eduardo Guendelman, L. Aresté Saló, J. d. Haro, David Benisty |
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| Přispěvatelé: | Universitat Politècnica de Catalunya. Departament de Matemàtiques, Universitat Politècnica de Catalunya. EDP - Equacions en Derivades Parcials i Aplicacions |
| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
Inflation
High Energy Physics - Theory Cosmology and Nongalactic Astrophysics (astro-ph.CO) media_common.quotation_subject FOS: Physical sciences Física::Astronomia i astrofísica::Cosmologia i cosmogonia [Àrees temàtiques de la UPC] General Relativity and Quantum Cosmology (gr-qc) Astrophysics::Cosmology and Extragalactic Astrophysics General Relativity and Quantum Cosmology High Energy Physics - Phenomenology (hep-ph) Dark energy (Astronomy) media_common Physics Cosmologia Keynesian economics Astronomy and Astrophysics language.human_language Cosmology Government (linguistics) High Energy Physics - Phenomenology Seesaw mechanism High Energy Physics - Theory (hep-th) language Dark energy Observational study Catalan Matèria fosca (Astronomia) Astrophysics - Cosmology and Nongalactic Astrophysics |
| Zdroj: | UPCommons. Portal del coneixement obert de la UPC Universitat Politècnica de Catalunya (UPC) |
| Popis: | Recently a new kind of quintessential inflation coming from the Lorentzian distribution has been introduced in [1,2]. The model leads to a very simple potential, which basically depends on two parameters, belonging to the class of $\alpha$-attractors and depicting correctly the early and late time accelerations of our universe. The potential emphasizes a {\it cosmological seesaw mechanism} (CSSM) that produces a large inflationary vacuum energy in one side of the potential and a very small value of dark energy on the right hand side of the potential. {Here we show that the model agrees with the recent observations and with the reheating constraints. Therefore the model gives a reasonable scenario beyond the standard $\Lambda$CDM that includes the inflationary epoch.} Comment: 9 pages; 5 figures; accepted for publishing in JCAP |
| Databáze: | OpenAIRE |
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