Inhomogeneous Kinetic Equation for Mixed Neutrinos: Tracing the Missing Energy
Publikation: Bidrag til tidsskrift › Letter › Forskning › fagfællebedømt
Dokumenter
- PhysRevLett.133.021002
Forlagets udgivne version, 407 KB, PDF-dokument
Flavor-dependent neutrino transport is described by a well-known kinetic equation for occupation-number matrices in flavor space. However, in the context of fast flavor conversion, we identify an unforeseen predicament: the pivotal self-induced exponential growth of small inhomogeneities strongly violates conservation of neutrino-neutrino refractive energy. We prove that it is traded with the huge reservoir of neutrino kinetic energy through gradients of neutrino flavor coherence (the off-diagonal piece of the flavor density matrix) and derive the missing gradient terms. The usual equations remain sufficient to describe flavor evolution, at the cost of renouncing energy conservation, which cannot play any role in explaining the numerically observed final state.
| Originalsprog | Engelsk |
|---|---|
| Artikelnummer | 021002 |
| Tidsskrift | Physical Review Letters |
| Vol/bind | 133 |
| Udgave nummer | 2 |
| Antal sider | 7 |
| ISSN | 0031-9007 |
| DOI | |
| Status | Udgivet - 19 jul. 2024 |
Bibliografisk note
Funding Information:
We acknowledge useful discussions with Basudeb Dasgupta, Lucas Johns, Shashank Shalgar, and Irene Tamborra. D.\u2009F.\u2009G.\u2009F. is supported by the Villum Fonden under Project No. 29388 and the European Union\u2019s Horizon 2020 Research and Innovation Program under the Marie Sk\u0142odowska-Curie Grant Agreement No. 847523 \u201CINTERACTIONS.\u201D G.\u2009G.\u2009R. acknowledges partial support by the German Research Foundation (DFG) through the Collaborative Research Centre \u201CNeutrinos and Dark Matter in Astro- and Particle Physics (NDM),\u201D Grant SFB-1258-283604770, and under Germany\u2019s Excellence Strategy through the Cluster of Excellence ORIGINS EXC-2094-390783311. G.\u2009S. acknowledges support by the Deutsche Forschungsgemeinschaft (DFG, German Research Foundation) under Germany\u2019s Excellence Strategy\u2014EXC 2121 \u201CQuantum Universe\u201D\u2014390833306.
Publisher Copyright:
© 2024 authors. Published by the American Physical Society. Published by the American Physical Society under the terms of the "https://creativecommons.org/licenses/by/4.0/"Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article's title, journal citation, and DOI. Funded by SCOAP3.
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