Relatore
Descrizione
In this poster, a microscopic quantum mechanical model for
gravitationally induced decoherence in the context of neutrino
oscillations is presented. The focus is on the comparison with existing
phenomenological models and the physical interpretation of the
decoherence parameters in such models. The results show that for
neutrino oscillations in vacuum gravitationally induced decoherence can
be matched with phenomenological models with decoherence parameters of a
specific form. When matter effects are included, the decoherence
parameters show a dependence on matter effects, which vary in the
different layers of the Earth, that can be explained with the form of
the coupling between neutrinos and the gravitational wave environment
inspired by linearised gravity. Consequently, in the case of neutrino
oscillations in matter, the microscopic model does not agree with many
existing phenomenological models that assume constant decoherence
parameters in matter, and their existing bounds cannot be used to
further constrain the model considered here. The probabilities for
neutrino oscillations with constant and varying decoherence parameters
are compared and it is shown that the deviations can be up to 10%.
Furthermore, the quantum mechanical model is compared with master
equations derived from a field-theoretic model based on linearised gravity.
| Poster prize | Yes |
|---|---|
| Given name | Max Joseph |
| Surname | Fahn |
| First affiliation | ECAP, FAU Erlangen-Nürnberg |
| Second affiliation | Institute for Quantum Gravity, FAU Erlangen-Nürnberg |
| Institutional email | max.j.fahn@fau.de |
| Gender | Male |
