NEUTRINO QUANTUM KINETICS

Informations projet

ANET

N° de convention de subvention: 101087058

DOI

10.3030/101087058

Date de signature de la CE 15 Février 2023

Date de début 1 Octobre 2023

Date de fin 30 Septembre 2029

Financé au titre de

• European Research Council (ERC)

Coût total

€ 2 027 474,00

Contribution de l’UE

€ 2 027 474,00

Coordonné par

KOBENHAVNS UNIVERSITET
Denmark

Periodic Reporting for period 1 - ANET (NEUTRINO QUANTUM KINETICS)

Période du rapport: 2023-10-01 au 2026-03-31

Résumé du contexte et des objectifs généraux du projet

Neutrinos, feebly interacting particles copiously produced in compact astrophysical sources, come in three flavors: electron, muon and tau. Neutrinos are the second most abundant particles in our Universe after photons. The neutrinos change flavors during their propagation. Core collapse supernovae, originating from the death of stars that are at least eight times heavier than the Sun, are extremely rich in neutrinos. The compact object remnant from a supernova explosion is a neutron star or a black hole. The merger remnant of two neutron stars or a neutron star and a black hole is also neutrino dense. Our understanding of neutrino physics, in particular neutrino flavor conversion, in the core of supernovae and neutron-star merger remnants, where the matter density is extremely large, is preliminary. Yet, neutrinos are the main drivers behind supernova explosions and the synthesis of the elements heavier than iron.

ANET promises to advance our understanding of neutrino flavor conversion in the core of supernovae. It will have profound implications on fundamental physics, the origin of the elements heavier than iron, as well as our comprehension of the behavior of matter at extreme densities and the physics of neutrino-dense sources.

Travail effectué depuis le début du projet jusqu’à la fin de la période considérée dans le rapport et principaux résultats atteints jusqu’à présent

We have investigated the configuration achieved by neutrinos of different flavors in the aftermath of flavor conversion and the conditions leading to large flavor conversion. This goal has been achieved through numerical models that have facilitated the exploration of flavor conversion in multiple dimensions. In addition, we have developed analytical tools to approximate the flavor configuration achieved thanks to flavor conversion. We will further increase the level of sophistication of our models to account for other features characterizing neutrino flavor conversion and improve our understanding of neutrino physics in compact astrophysical objects.

Progrès au-delà de l’état des connaissances et impact potentiel prévu (y compris l’impact socio-économique et les conséquences sociétales plus larges du projet jusqu’à présent)

Understanding the physics linked to neutrino flavor evolution in neutrino-dense sources is challenging. We are advancing our understanding of the conditions leading to the development of flavor conversion as well as our understanding of the impact of flavor conversion on the neutrino properties.