Dr
CRISTINA VOLPE
(ASTROPARTICULE ET COSMOLOGIE (APC))
02/12/2014, 14:45
Neutrinos of astrophysical origin are messengers produced in stars, in explosive phenomena like core-collapse supernovae, in the accretion disks around black holes, or in the Earth's atmosphere. Their fluxes and spectra encode information on the environments that produce them. Such fluxes are modified in characteristic ways when neutrinos traverse a medium, also depending on key unknown...
Massimo Blasone
(Università di Salerno)
02/12/2014, 15:20
We present a dynamical mechanism à la Nambu-Jona-Lasinio for the generation of masses and mixing for two interacting fermion fields. The analysis is carried out in a framework in which mass generation is achieved via inequivalent representations, and that we generalize to the case of two generations. The method allows a clear identification of the vacuum structure for each physical phase,...
Dr
Juan Carlos D'Olivo
(Depto. de Física Teórica, Universidad de Valencia)
02/12/2014, 15:55
We consider the evolution operator of a quantum system described
by a time-dependent Hamiltonian that is invariant under time reversal.
As an illustration we examine the three-neutrino oscillations in a medium
with a density profile which is symmetrical about the midpoint of the of the
neutrino trajectory. The evolution operator is written as the product of factors
corresponding to...
