# Generation of quasiparticles by flavor mixing and CP violation: heavy Majorana neutrinos, part I

## TL;DR

This paper investigates how flavor mixing and CP violation affect heavy Majorana neutrinos, revealing they behave as quasiparticles losing their Majorana nature due to mixing effects.

## Contribution

It introduces a framework for understanding heavy Majorana neutrino flavor mixing as quasiparticles and analyzes their decay and CP violation effects.

## Key findings

- Heavy Majorana neutrinos act as quasiparticles with flavor mixing.
- Flavor mixing causes loss of Majorana nature in neutrinos.
- The propagator diagonalization identifies physical degrees of freedom.

## Abstract

The phenomenology of flavor mixing of heavy Majorana neutrinos is studied. The physical degrees of freedom, which propagate like free particles until they decay in the presence of flavor mixing, are identified by diagonalizing the resummed propagator. It is shown that they should be interpreted as quasiparticles which lose Majorana nature.