Many-body effects of collective neutrino oscillations

被引：22

作者：

Xiong, Zewei ^{[1
]}

机构：

[1] GSI Helmholtzzentrum Schwerioneneforsch, D-64291 Darmstadt, Germany

来源：

PHYSICAL REVIEW D | 2022年 / 105卷 / 10期

基金：

欧洲研究理事会;

关键词：

D O I：

10.1103/PhysRevD.105.103002

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

Collective neutrino oscillations are critical to determine the neutrino flavor content, which has striking impacts on core-collapse supernovae or compact binary merger remnants. It is a challenging many-body problem that so far has been mainly studied at the mean-field approximation. We use a setup that captures the relevant physics and allows exact solution for a large number of neutrinos. We find that quantitative deviation from the mean-field evolution can exist even for a large system. The underlying mechanism due to many-body decoherence in flavor space is analyzed, and similar features have been observed in a spin-1 Bose-Einstein condensate. Our results call for more careful examinations on the possible many-body corrections to collective neutrino oscillations in astrophysical environments.

引用

页数：6

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