Geometric phase of neutrinos: differences between Dirac and Majorana neutrinos

TL;DR

This paper investigates the geometric phase of neutrinos to distinguish between Dirac and Majorana types, proposing that interferometry experiments could reveal their fundamental nature.

Contribution

It introduces the use of non-cyclic geometric phase as a novel method to differentiate neutrino types in vacuum and matter environments.

Findings

Geometric phase differs between Dirac and Majorana neutrinos.

Total phase associated with neutrino mixing can serve as a distinguishing tool.

Potential for future interferometry experiments to determine neutrino nature.

Abstract

We analize the non-cyclic geometric phase for neutrinos. We find that the geometric phase and the total phase associated to the mixing phenomenon provide a tool to distinguish between Dirac and Majorana neutrinos. Our results hold for neutrinos propagating in vacuum and through the matter. Future experiments, based on interferometry, could reveal the nature of neutrinos.