Hamburg 2016 – wissenschaftliches Programm
Bereiche | Tage | Auswahl | Suche | Aktualisierungen | Downloads | Hilfe
T: Fachverband Teilchenphysik
T 21: Theorie und Experiment in Kosmologie und Neutrinophysik
T 21.4: Vortrag
Montag, 29. Februar 2016, 11:45–12:00, VMP9 SR 30
Small Neutrino Masses from Gravitational θ-Term — Gia Dvali1,2,3 and •Lena Funcke1,2 — 1Arnold Sommerfeld Center for Theoretical Physics, Ludwig Maximilian University, Theresienstr. 37, 80333 Munich, Germany — 2Max Planck Institute for Physics, Foehringer Ring 6, 80805 Munich, Germany — 3Center for Cosmology and Particle Physics, Department of Physics, New York University, 4 Washington Place, New York, NY 10003, USA
We present how a neutrino condensate and small neutrino masses emerge from a topological formulation of gravitational anomaly. We first recapitulate how a gravitational θ-term leads to the emergence of a new bound neutrino state analogous to the η′ meson of QCD. Then we show the consequent formation of a neutrino vacuum condensate, which effectively generates small neutrino masses. Afterwards we outline numerous phenomenological consequences of our model, such as the invalidity of the cosmological neutrino mass bound, enhanced neutrino-neutrino interactions, and neutrino decays. The measurement of the polarization intensities of gravitational waves can verify our neutrino mass generation model, which hopefully will be accomplished in near future.