Inhomogeneous Kinetic Equation for Mixed Neutrinos: Tracing the Missing Energy

Research output: Contribution to journal › Letter › Research › peer-review

Standard

Inhomogeneous Kinetic Equation for Mixed Neutrinos : Tracing the Missing Energy. / Fiorillo, Damiano F.G.; Raffelt, Georg G.; Sigl, Günter.

In: Physical Review Letters, Vol. 133, No. 2, 021002, 19.07.2024.

Research output: Contribution to journal › Letter › Research › peer-review

Harvard

Fiorillo, DFG, Raffelt, GG & Sigl, G 2024, 'Inhomogeneous Kinetic Equation for Mixed Neutrinos: Tracing the Missing Energy', Physical Review Letters, vol. 133, no. 2, 021002. https://doi.org/10.1103/PhysRevLett.133.021002

APA

Fiorillo, D. F. G., Raffelt, G. G., & Sigl, G. (2024). Inhomogeneous Kinetic Equation for Mixed Neutrinos: Tracing the Missing Energy. Physical Review Letters, 133(2), [021002]. https://doi.org/10.1103/PhysRevLett.133.021002

Vancouver

Fiorillo DFG, Raffelt GG, Sigl G. Inhomogeneous Kinetic Equation for Mixed Neutrinos: Tracing the Missing Energy. Physical Review Letters. 2024 Jul 19;133(2). 021002. https://doi.org/10.1103/PhysRevLett.133.021002

Author

Fiorillo, Damiano F.G. ; Raffelt, Georg G. ; Sigl, Günter. / Inhomogeneous Kinetic Equation for Mixed Neutrinos : Tracing the Missing Energy. In: Physical Review Letters. 2024 ; Vol. 133, No. 2.

Bibtex

@article{f2f83d7239e942f5849987b9a032b902,
title = "Inhomogeneous Kinetic Equation for Mixed Neutrinos: Tracing the Missing Energy",
abstract = "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. ",
author = "Fiorillo, {Damiano F.G.} and Raffelt, {Georg G.} and G{\"u}nter Sigl",
note = "Publisher Copyright: {\textcopyright} 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.",
year = "2024",
month = jul,
day = "19",
doi = "10.1103/PhysRevLett.133.021002",
language = "English",
volume = "133",
journal = "Physical Review Letters",
issn = "0031-9007",
publisher = "American Physical Society",
number = "2",

}

RIS

TY - JOUR

T1 - Inhomogeneous Kinetic Equation for Mixed Neutrinos

T2 - Tracing the Missing Energy

AU - Fiorillo, Damiano F.G.

AU - Raffelt, Georg G.

AU - Sigl, Günter

N1 - 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.

PY - 2024/7/19

Y1 - 2024/7/19

N2 - 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.

AB - 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.

U2 - 10.1103/PhysRevLett.133.021002

DO - 10.1103/PhysRevLett.133.021002

M3 - Letter

C2 - 39073929

AN - SCOPUS:85198521526

VL - 133

JO - Physical Review Letters

JF - Physical Review Letters

SN - 0031-9007

IS - 2

M1 - 021002

ER -

ID: 402168496