出版社：SISSA, Scuola Internazionale Superiore di Studi Avanzati
摘要：A perturbative approach for arbitrary choices of the equation of state of the universe is introduced
in order to treat scenarios for mass varying neutrinos (MaVaN’s) coupled to the dark sector. It allows
for considering viable varying mass neutrino models coupled to any quintessence-type field.
The Generalized Chaplygin model is considered as an example. Upon certain conditions, the
usual stationary condition found in the context of MaVaN models together with the perturbative
contribution can be employed to predict the dynamical evolution of the neutrino mass. Results
clearly indicate that the positiveness of the squared speed of sound of the coupled fluid and the
model stability are not conditioned by the stationary condition.
