A novel way to determine the scale of inflation
| Autor: | David Wands, Vincent Vennin, Kari Enqvist, Tommi Tenkanen, Robert J. Hardwick |
|---|---|
| Přispěvatelé: | AstroParticule et Cosmologie (APC (UMR_7164)), Observatoire de Paris, PSL Research University (PSL)-PSL Research University (PSL)-Université Paris Diderot - Paris 7 (UPD7)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), AstroParticule et Cosmologie ( APC - UMR 7164 ), Centre National de la Recherche Scientifique ( CNRS ) -Institut National de Physique Nucléaire et de Physique des Particules du CNRS ( IN2P3 ) -Observatoire de Paris-Université Paris Diderot - Paris 7 ( UPD7 ) -Commissariat à l'énergie atomique et aux énergies alternatives ( CEA ), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Centre National de la Recherche Scientifique (CNRS)-Université de Paris (UP), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Observatoire de Paris, PSL Research University (PSL)-PSL Research University (PSL)-Université Paris Diderot - Paris 7 (UPD7), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Centre National de la Recherche Scientifique (CNRS)-Université Paris Cité (UPCité), Helsinki Institute of Physics, Department of Physics |
| Jazyk: | angličtina |
| Rok vydání: | 2018 |
| Předmět: |
reheating
[ PHYS.ASTR ] Physics [physics]/Astrophysics [astro-ph] UNIVERSE Massive particle Perturbation (astronomy) 01 natural sciences particle: massive High Energy Physics - Phenomenology (hep-ph) cosmology of theories beyond the SM media_common Physics dark matter theory INTERACTING DARK-MATTER REHEATING TEMPERATURE hep-ph Observable Scalar boson High Energy Physics - Phenomenology scalar particle particle physics - cosmology connection VACUUM astro-ph.CO Higgs boson history Astrophysics - Cosmology and Nongalactic Astrophysics Cosmology and Gravitation scale: inflation Cosmology and Nongalactic Astrophysics (astro-ph.CO) media_common.quotation_subject Dark matter FOS: Physical sciences Astrophysics::Cosmology and Extragalactic Astrophysics dark matter: density Physics and Astronomy(all) ST/N504245/1 isocurvature: perturbation ST/J001546/1 Theoretical physics FLATNESS HORIZON 0103 physical sciences Stress–energy tensor inflation 010306 general physics STFC 010308 nuclear & particles physics perturbation: tensor GAUGE SINGLET SCALARS RCUK Astronomy and Astrophysics 115 Astronomy Space science THERMALIZATION Universe [PHYS.HPHE]Physics [physics]/High Energy Physics - Phenomenology [hep-ph] PHASE-TRANSITION [ PHYS.HPHE ] Physics [physics]/High Energy Physics - Phenomenology [hep-ph] ST/N000668/1 [PHYS.ASTR]Physics [physics]/Astrophysics [astro-ph] ENERGY-MOMENTUM TENSOR |
| Zdroj: | JCAP JCAP, 2018, 02, pp.006. ⟨10.1088/1475-7516/2018/02/006⟩ JCAP, 2018, 02 (02), pp.006. 〈10.1088/1475-7516/2018/02/006〉 Journal of Cosmology and Astroparticle Physics Enqvist, K, Hardwick, R J, Tenkanen, T, Vennin, V & Wands, D 2018, ' A novel way to determine the scale of inflation ', Journal of Cosmology and Astroparticle Physics, vol. 2018, 006 . https://doi.org/10.1088/1475-7516/2018/02/006 |
| ISSN: | 1674-1137 1475-7516 1126-6708 |
| DOI: | 10.1088/1475-7516/2018/02/006⟩ |
| Popis: | We show that in the Feebly Interacting Massive Particle (FIMP) model of Dark Matter (DM), one may express the inflationary energy scale $H_*$ as a function of three otherwise unrelated quantities, the DM isocurvature perturbation amplitude, its mass and its self-coupling constant, independently of the tensor-to-scalar ratio. The FIMP model assumes that there exists a real scalar particle that alone constitutes the DM content of the Universe and couples to the Standard Model via a Higgs portal. We consider carefully the various astrophysical, cosmological and model constraints, accounting also for variations in inflationary dynamics and the reheating history, to derive a robust estimate for $H_*$ that is confined to a relatively narrow range. We point out that, within the context of the FIMP DM model, one may thus determine $H_*$ reliably even in the absence of observable tensor perturbations. Comment: 25 pages, 11 figures. v2: Discussion and references added, matches the published version |
| Databáze: | OpenAIRE |
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