Warm brane inflation with an exponential potential: A consistent realization away from the swampland
| Autor: | Vahid Kamali, Meysam Motaharfar, Rudnei O. Ramos |
|---|---|
| Rok vydání: | 2019 |
| Předmět: |
High Energy Physics - Theory
Inflation (cosmology) Physics Cosmology and Nongalactic Astrophysics (astro-ph.CO) 010308 nuclear & particles physics FOS: Physical sciences General Relativity and Quantum Cosmology (gr-qc) Inflaton Swampland 01 natural sciences General Relativity and Quantum Cosmology High Energy Physics - Phenomenology Theoretical physics High Energy Physics - Phenomenology (hep-ph) Warm inflation High Energy Physics - Theory (hep-th) 0103 physical sciences Dissipative system Brane cosmology Brane 010306 general physics Scalar field Astrophysics - Cosmology and Nongalactic Astrophysics |
| DOI: | 10.48550/arxiv.1910.06796 |
| Popis: | It has very recently been realized that coupling branes to higher dimensional quantum gravity theories and considering the consistency of what lives on the branes, one is able to understand whether such theories can belong either to the swampland or to the landscape. In this regard, in the present work, we study a warm inflation model embedded in the Randall-Sundrum braneworld scenario. It is explicitly shown that this model belongs to the landscape by supporting a strong dissipative regime with an inflaton steep exponential potential. The presence of extra dimension effects from the braneworld allow achieving this strong dissipative regime, which is shown to be both theoretically and observationally consistent. In fact, such strong dissipation effects, which decrease towards the end of inflation, together with the extra dimension effect, allow the present realization to simultaneously satisfy all previous restrictions imposed on such a model and to evade the recently proposed swampland conjectures. The present implementation of this model, in terms of an exponential potential for the scalar field, makes it also a possible candidate for describing the late-time Universe in the context of a dissipative quintessential inflation model and we discuss this possibility in the Conclusions. Comment: 13 pages, 4 figures. Replaced with version matching the published one |
| Databáze: | OpenAIRE |
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