학술논문

Many-body collective neutrino oscillations: recent developments
Document Type
Working Paper
Source
In: Handbook of Nuclear Physics (2022), Springer Nature, Singapore, edited by Tanihata, I., Toki, H., Kajino, T
Subject
High Energy Physics - Phenomenology
Astrophysics - High Energy Astrophysical Phenomena
Nuclear Theory
Quantum Physics
Language
Abstract
Neutrino flavor transformations in core-collapse supernovae and binary neutron star mergers represent a complex and unsolved problem that is integral to our understanding of the dynamics and nucleosynthesis in these environments. The high number densities of neutrinos present in these environments can engender various collective effects in neutrino flavor transformations, driven either by neutrino-neutrino coherent scattering, or in some cases, through collisional (incoherent) interactions. An ensemble of neutrinos undergoing coherent scattering among themselves is an interacting quantum many-body system -- as such, there is a tantalising prospect of quantum entanglement developing between the neutrinos, which can leave imprints on their flavor evolution histories. Here, we seek to summarize recent progress that has been made towards understanding this phenomenon.
Comment: 16 pages, 1 figure. Matches version to appear in Springer Handbook of Nuclear Physics (minus stylistic edits)