Naslov
Cosmic coincidences and relic neutrinos

Autori
Horvat, Raul

Izvornik
Journal of Physics A - Mathematical and General (1751-8113) 40 (2007), 25; 7011-7015

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
dark energy; neutrino

Sažetak
A simple phenomenological description for the energy transfer between a variable cosmological constant (CC) and a gas of relic neutrinos in an expanding universe can account for a near coincidence between the neutrino and dark-energy densities to hold over a significant portion of the history of the universe. Although such a cosmological setup may promote neutrinos to mass-varying particles, both with slow and quick neutrino mass changing with the expansion of the universe naturally implemented in the model, it also works equally well for static neutrino masses. We also stress what sort of models for variable CC can potentially underpin the above scenario.

Izvorni jezik
Engleski

Znanstvena područja
Fizika

POVEZANOST RADA