Baryogenesis from ultralight primordial black holes and strong gravitational waves from cosmic strings

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378271%3A_____%2F21%3A00554703" target="_blank" >RIV/68378271:_____/21:00554703 - isvavai.cz</a>

Výsledek na webu

<a href="https://doi.org/10.1088/1475-7516/2021/08/021" target="_blank" >https://doi.org/10.1088/1475-7516/2021/08/021</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1088/1475-7516/2021/08/021" target="_blank" >10.1088/1475-7516/2021/08/021</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Baryogenesis from ultralight primordial black holes and strong gravitational waves from cosmic strings

Popis výsledku v původním jazyce

Ultralight primordial black holes (PBHs)(≲109g) completely evaporate via Hawking radiation (HR) and produce all the particles in a given theory regardless of their other interactions. If the right handed (RH) neutrinos are produced from PBH evaporation, successful baryogenesis via leptogenesis predicts mass scale of RH neutrinos as well as black holes. We show that, given the lepton number violation (generation of RH neutrino masses) in the theory is a consequence of a gauged U(1) breaking which is then followed by the formation of PBHs, a network of cosmic strings naturally gives rise to strong stochastic gravitational wave (GW) signal at the sensitivity level of pulsar timing arrays (PTA) and LIGO5. Besides, due to a transient period of black hole domination in the early universe, for which baryon asymmetry is independent of initial PBH density, a break in the GW spectra occurs around MHz frequency.

Název v anglickém jazyce

Baryogenesis from ultralight primordial black holes and strong gravitational waves from cosmic strings

Popis výsledku anglicky

Ultralight primordial black holes (PBHs)(≲109g) completely evaporate via Hawking radiation (HR) and produce all the particles in a given theory regardless of their other interactions. If the right handed (RH) neutrinos are produced from PBH evaporation, successful baryogenesis via leptogenesis predicts mass scale of RH neutrinos as well as black holes. We show that, given the lepton number violation (generation of RH neutrino masses) in the theory is a consequence of a gauged U(1) breaking which is then followed by the formation of PBHs, a network of cosmic strings naturally gives rise to strong stochastic gravitational wave (GW) signal at the sensitivity level of pulsar timing arrays (PTA) and LIGO5. Besides, due to a transient period of black hole domination in the early universe, for which baryon asymmetry is independent of initial PBH density, a break in the GW spectra occurs around MHz frequency.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10303 - Particles and field physics

Projekt

<a href="/cs/project/EF20_079%2F0017754" target="_blank" >EF20_079/0017754: Mezinárodní mobilita MSCA-IF IV FZU</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2021

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Journal of Cosmology and Astroparticle Physics

ISSN

1475-7516

e-ISSN

1475-7516

Svazek periodika

2021

Číslo periodika v rámci svazku

8

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

29

Strana od-do

021

Kód UT WoS článku

000686656000007

EID výsledku v databázi Scopus

2-s2.0-85113368286