Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2009-11-02
Phys.Lett. B684 (2010) 162-166
Physics
High Energy Physics
High Energy Physics - Phenomenology
12 pages, 2 figures
Scientific paper
10.1016/j.physletb.2010.01.012
The cosmological evolution of neutrino energy densities driven by cosmon-type field equations is introduced assuming that active and sterile neutrinos are intrinsically connected by cosmon fields through the {\em seesaw} mechanism. Interpreting sterile neutrinos as dark matter adiabatically coupled with dark energy results in a natural decoupling of (active) mass varying neutrino (MaVaN) equations. Identifying the dimensionless scale of the {\em seesaw} mechanism, $m/M$, with a power of the cosmological scale factor, $a$, allows for embedding the resulting masses into the generalized Chaplygin gas (GCG) scenario for the dark sector. Without additional assumptions, our findings establish a precise connection among three distinct frameworks: the cosmon field dynamics for MaVaN's, the {\em seesaw} mechanism for dynamical mass generation and the GCG scenario. Our results also corroborate with previous assertions that mass varying particles can be the right responsible for the stability issue and for the cosmic acceleration of the universe.
No associations
LandOfFree
Coupling active and sterile neutrinos in the cosmon plus seesaw framework does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Coupling active and sterile neutrinos in the cosmon plus seesaw framework, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Coupling active and sterile neutrinos in the cosmon plus seesaw framework will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-255785