Interacting neutrinos in cosmology: exact description and constraints
We consider the impact of neutrino self-interactions described by an effective four-fermion coupling on cosmological observations. Implementing the exact Boltzmann hierarchy for interacting neutrinos first derived in [1] into the Boltzmann solver CLASS, we perform a detailed numerical analysis of th...
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| Main Authors: | , |
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| Format: | Article (Journal) |
| Language: | English |
| Published: |
17 November 2017
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| In: |
Journal of cosmology and astroparticle physics
Year: 2017, Issue: 11, Pages: ? |
| ISSN: | 1475-7516 |
| DOI: | 10.1088/1475-7516/2017/11/027 |
| Online Access: | Resolving-System, Volltext: http://dx.doi.org/10.1088/1475-7516/2017/11/027 Verlag, Volltext: http://stacks.iop.org/1475-7516/2017/i=11/a=027 
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| Author Notes: | Isabel M. Oldengott, Thomas Tram, Cornelius Rampf, Yvonne Y.Y. Wong |
| Summary: | We consider the impact of neutrino self-interactions described by an effective four-fermion coupling on cosmological observations. Implementing the exact Boltzmann hierarchy for interacting neutrinos first derived in [1] into the Boltzmann solver CLASS, we perform a detailed numerical analysis of the effects of the interaction on the cosmic microwave background (CMB) anisotropies, and compare our results with known approximations in the literature. |
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| Item Description: | Gesehen am 04.09.2018 |
| Physical Description: | Online Resource |
| ISSN: | 1475-7516 |
| DOI: | 10.1088/1475-7516/2017/11/027 |