تقرير
A Systematic Study on the Resonance in Collisional Neutrino Flavor Instability
| العنوان: | A Systematic Study on the Resonance in Collisional Neutrino Flavor Instability |
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| المؤلفون: | Liu, Jiabao, Zaizen, Masamichi, Yamada, Shoichi |
| سنة النشر: | 2023 |
| المجموعة: | Astrophysics High Energy Physics - Phenomenology |
| مصطلحات موضوعية: | High Energy Physics - Phenomenology, Astrophysics - High Energy Astrophysical Phenomena |
| الوصف: | Investigations on the resonance in the collisional flavor instability (CFI) of neutrinos, which were reported recently, are reported. We show that the resonance occurs not only for the isotropy-preserving modes as pointed out in the previous work but also for the isotropy-breaking modes and that it enhances the growth rate of CFI by orders of magnitude. Employing the linear analysis and nonlinear numerical simulations in the two-flavor scheme and under the relaxation approximation for the collision term, we discuss the criterion for the resonance, its effect on the nonlinear evolution as well as the influences of homogeneity-breaking (k \ne 0) perturbations as well as of anisotropy in the background on the resonance. We will also touch the cohabitation of the resonance with the fast flavor conversion (FFC). Comment: Accepted in PRD |
| نوع الوثيقة: | Working Paper |
| DOI: | 10.1103/PhysRevD.107.123011 |
| URL الوصول: | http://arxiv.org/abs/2302.06263 |
| رقم الأكسشن: | edsarx.2302.06263 |
| قاعدة البيانات: | arXiv |
| DOI: | 10.1103/PhysRevD.107.123011 |
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