Regular Article - Theoretical Physics
Dark energy and neutrino CPT-violation
Theoretical Physics Division, IHEP, Chinese Academy of Sciences, Beijing, 100049, P.R. China
2 Key Laboratory of Particle Astrophysics, IHEP, Chinese Academy of Sciences, Beijing, 100049, P.R. China
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Published online: 13 February 2007
In this paper we study dynamical CPT-violation in the neutrino sector as induced by the dark energy of the universe. Specifically we consider a dark energy model where the dark energy scalar derivatively interacts with the right-handed neutrinos. This type of derivative coupling leads to cosmological CPT-violation during the evolution of the background field of the dark energy. We calculate the induced CPT-violation of left-handed neutrinos and find that the CPT-violation produced in this way is consistent with the present experimental limit and sensitive to future neutrino oscillation experiments such as the neutrino factory.
© Springer-Verlag Berlin Heidelberg, 2007