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

Result code in 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>
Result on the web
<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>

Result language
angličtina
Original language name
Baryogenesis from ultralight primordial black holes and strong gravitational waves from cosmic strings
Original language description
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.
Czech name
—
Czech description
—

Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
—
OECD FORD branch
10303 - Particles and field physics

Project
<a href="/en/project/EF20_079%2F0017754" target="_blank" >EF20_079/0017754: International mobility MSCA-IF IV FZU</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year
2021
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Similar results(10)