New Physics and Neutrino Oscillation

TL;DR

This paper discusses how Non-Standard neutrino Interactions (NSI) affect neutrino oscillations, leading to mixed states and entanglement, and emphasizes the importance of the density matrix in describing these phenomena.

Contribution

It provides a brief overview of neutrino oscillation under NSI, highlighting the role of mixed states and the density matrix in the process.

Findings

NSI causes entanglement between neutrino degrees of freedom and other particles.

Neutrinos are mostly in mixed states due to NSI.

Density matrix is crucial for describing neutrino oscillations with NSI.

Abstract

Description of neutrino oscillation in the case of Non-Standard neutrino Interaction (NSI) is briefly presented. The NSI causes the entanglement between internal degrees of freedom of neutrinos (mass, spin, flavour) and other accompanying particles in the production and detection processes. In such case neutrinos are mostly in the mixed states. Role of the density matrix in description of neutrino oscillation process is shortly explained.