Collective flavor transitions of supernova neutrinos

TL;DR

This paper reviews how collective neutrino oscillation effects in supernovae, such as synchronized and bipolar oscillations, can significantly influence neutrino flavor transformations and impact detection strategies.

Contribution

It provides a concise overview of collective neutrino oscillation phenomena in supernovae, highlighting recent theoretical insights and open questions.

Findings

Collective effects can alter neutrino flavor evolution in supernovae.

Energy and angular modes influence oscillation behavior.

Three-flavor effects are significant in the collective regime.

Abstract

We give a very brief overview of collective effects in neutrino oscillations in core collapse supernovae where refractive effects of neutrinos on themselves can considerably modify flavor oscillations, with possible repercussions for future supernova neutrino detection. We discuss synchronized and bipolar oscillations, the role of energy and angular neutrino modes, as well as three-flavor effects. We close with a short summary and some open questions.