Probing leptogenesis and pre-BBN universe with gravitational waves spectral shapes

Abstract On the frequency-amplitude plane, Gravitational Waves (GWs) from cosmic strings show a flat plateau at higher frequencies due to the string loop dynamics in standard radiation dominated post-inflationary epoch. The spectrum may show an abrupt upward or a downward trend beyond a turning poin...

Descripción completa

Guardado en:

Detalles Bibliográficos
Autores principales:	Rome Samanta, Satyabrata Datta
Formato:	article
Lenguaje:	EN
Publicado:	SpringerOpen 2021
Materias:	Cosmology of Theories beyond the SM CP violation Neutrino Physics Nuclear and particle physics. Atomic energy. Radioactivity QC770-798
Acceso en línea:	https://doaj.org/article/cedd0d2d8bf64e94a149d3d3432b384f
Etiquetas:	Agregar Etiqueta Sin Etiquetas, Sea el primero en etiquetar este registro!

id	oai:doaj.org-article:cedd0d2d8bf64e94a149d3d3432b384f
record_format	dspace
spelling	oai:doaj.org-article:cedd0d2d8bf64e94a149d3d3432b384f2021-11-14T12:42:22ZProbing leptogenesis and pre-BBN universe with gravitational waves spectral shapes10.1007/JHEP11(2021)0171029-8479https://doaj.org/article/cedd0d2d8bf64e94a149d3d3432b384f2021-11-01T00:00:00Zhttps://doi.org/10.1007/JHEP11(2021)017https://doaj.org/toc/1029-8479Abstract On the frequency-amplitude plane, Gravitational Waves (GWs) from cosmic strings show a flat plateau at higher frequencies due to the string loop dynamics in standard radiation dominated post-inflationary epoch. The spectrum may show an abrupt upward or a downward trend beyond a turning point frequency f *, if the primordial dark age prior to the Big Bang Nucleosynthesis (BBN), exhibits non-standard cosmic histories. We argue that such a spectral break followed by a rising GW amplitude which is a consequence of a post-inflationary equation of state (ω > 1/3) stiffer than the radiation (ω = 1/3), could also be a strong hint of a leptogenesis in the seesaw model of neutrino masses. Dynamical generation of the right handed (RH) neutrino masses by a gauged U(1) symmetry breaking leads to the formation of a network of cosmic strings which emits stochastic GWs. A gravitational interaction of the lepton current by an operator of the form ∂ μ Rj μ — which can be generated in the seesaw model at the two-loop level through RH neutrino mediation, naturally seeks a stiffer equation of state to efficiently produce baryon asymmetry proportional to 1 − 3ω. We discuss how GWs with reasonably strong amplitudes complemented by a neutrino-less double beta decay signal could probe the onset of the most recent radiation domination and lightest RH neutrino mass at the intermediate scales.Rome SamantaSatyabrata DattaSpringerOpenarticleCosmology of Theories beyond the SMCP violationNeutrino PhysicsNuclear and particle physics. Atomic energy. RadioactivityQC770-798ENJournal of High Energy Physics, Vol 2021, Iss 11, Pp 1-24 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Cosmology of Theories beyond the SM CP violation Neutrino Physics Nuclear and particle physics. Atomic energy. Radioactivity QC770-798
spellingShingle	Cosmology of Theories beyond the SM CP violation Neutrino Physics Nuclear and particle physics. Atomic energy. Radioactivity QC770-798 Rome Samanta Satyabrata Datta Probing leptogenesis and pre-BBN universe with gravitational waves spectral shapes
description	Abstract On the frequency-amplitude plane, Gravitational Waves (GWs) from cosmic strings show a flat plateau at higher frequencies due to the string loop dynamics in standard radiation dominated post-inflationary epoch. The spectrum may show an abrupt upward or a downward trend beyond a turning point frequency f *, if the primordial dark age prior to the Big Bang Nucleosynthesis (BBN), exhibits non-standard cosmic histories. We argue that such a spectral break followed by a rising GW amplitude which is a consequence of a post-inflationary equation of state (ω > 1/3) stiffer than the radiation (ω = 1/3), could also be a strong hint of a leptogenesis in the seesaw model of neutrino masses. Dynamical generation of the right handed (RH) neutrino masses by a gauged U(1) symmetry breaking leads to the formation of a network of cosmic strings which emits stochastic GWs. A gravitational interaction of the lepton current by an operator of the form ∂ μ Rj μ — which can be generated in the seesaw model at the two-loop level through RH neutrino mediation, naturally seeks a stiffer equation of state to efficiently produce baryon asymmetry proportional to 1 − 3ω. We discuss how GWs with reasonably strong amplitudes complemented by a neutrino-less double beta decay signal could probe the onset of the most recent radiation domination and lightest RH neutrino mass at the intermediate scales.
format	article
author	Rome Samanta Satyabrata Datta
author_facet	Rome Samanta Satyabrata Datta
author_sort	Rome Samanta
title	Probing leptogenesis and pre-BBN universe with gravitational waves spectral shapes
title_short	Probing leptogenesis and pre-BBN universe with gravitational waves spectral shapes
title_full	Probing leptogenesis and pre-BBN universe with gravitational waves spectral shapes
title_fullStr	Probing leptogenesis and pre-BBN universe with gravitational waves spectral shapes
title_full_unstemmed	Probing leptogenesis and pre-BBN universe with gravitational waves spectral shapes
title_sort	probing leptogenesis and pre-bbn universe with gravitational waves spectral shapes
publisher	SpringerOpen
publishDate	2021
url	https://doaj.org/article/cedd0d2d8bf64e94a149d3d3432b384f
work_keys_str_mv	AT romesamanta probingleptogenesisandprebbnuniversewithgravitationalwavesspectralshapes AT satyabratadatta probingleptogenesisandprebbnuniversewithgravitationalwavesspectralshapes
_version_	1718429075062652928

Probing leptogenesis and pre-BBN universe with gravitational waves spectral shapes

Ejemplares similares