Reheating after Inflaton Fragmentation

Autor: Garcia, Marcos A. G., Pierre, Mathias

In the presence of self-interactions, the post-inflationary evolution of the inflaton field is driven into the non-linear regime by the resonant growth of its fluctuations. The once spatially homogeneous coherent inflaton is converted into a collecti

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::9bac8a0afec0857928d39f2e68f38c5a

Preheating from target space curvature and unitarity violation: Analysis in field space

Autor: Ema, Yohei, Jinno, Ryusuke, Nakayama, Kazunori, Van De Vis, Jorinde

We study particle production and unitarity violation caused by a curved target space right after inflation. We use the inflaton field value instead of cosmic time as the time variable, and derive a semiclassical formula for the spectrum of produced p

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::b9c9be152a34c85fb0e03f6b88cef215

New Kähler invariant Fayet–Iliopoulos terms in supergravity and cosmological applications

Autor: François Rondeau, Ignatios Antoniadis

Publikováno v: Antoniadis, I.; Rondeau, F. (2020). New Kähler invariant Fayet–Iliopoulos terms in supergravity and cosmological applications. The European physical journal. C, Particles and fields, 80(4) Springer 10.1140/epjc/s10052-020-7912-z
European Physical Journal C: Particles and Fields
European Physical Journal C: Particles and Fields, Springer Verlag (Germany), 2020, 80 (4), pp.346. ⟨10.1140/epjc/s10052-020-7912-z⟩
European Physical Journal C: Particles and Fields, Vol 80, Iss 4, Pp 1-14 (2020)
European Physical Journal

Recently, a new type of constant Fayet-Iliopoulos (FI) terms was introduced in $\mathcal{N}=1$ supergravity, which do not require the gauging of the $R$-symmetry. We revisit and generalise these constructions, building a new class of K\"ahler invaria

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::0cae46a2d052489c525a5d80b5efc16c
https://boris.unibe.ch/144704/1/10.1140_epjc_s10052-020-7912-z.pdf

Reheating and Post-inflationary Production of Dark Matter

Autor: Marcos A. G. Garcia, Keith A. Olive, Kunio Kaneta, Yann Mambrini

Publikováno v: Physical Review D
Physical Review D, American Physical Society, 2020, 101 (12), pp.123507. ⟨10.1103/PhysRevD.101.123507⟩
Biblos-e Archivo. Repositorio Institucional de la UAM
instname
Physical Review

We perform a systematic analysis of dark matter production during post-inflationary reheating. Following the period of exponential expansion, the inflaton begins a period of damped oscillations as it decays. These oscillations and the evolution of te

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::66d272be06b781e38c3300a6790a1b3d

A pure general relativistic non-singular bouncing origin for the Universe

Autor: Aurélien Barrau

Publikováno v: European Physical Journal C: Particles and Fields
European Physical Journal C: Particles and Fields, Springer Verlag (Germany), 2020, 80 (6), pp.579. ⟨10.1140/epjc/s10052-020-8158-5⟩
European Physical Journal C: Particles and Fields, Vol 80, Iss 6, Pp 1-7 (2020)
European Physical Journal

In this article, we argue that the past of the Universe, extrapolated from standard physics and measured cosmological parameters, might be a non-singular bounce. We also show that, in this framework, quite stringent constraints can be put on the rehe

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::6315a056ae62ffe5542fc614526d8dbf
https://hal.archives-ouvertes.fr/hal-02628861