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Local clustering of relic neutrinos with kinetic field theory.
- Source :
-
Physics Letters B . Sep2023, Vol. 844, pN.PAG-N.PAG. 1p. - Publication Year :
- 2023
-
Abstract
- The density of relic neutrinos is expected to be enhanced due to clustering in our local neighbourhood at Earth. We introduce a novel analytical technique to calculate the neutrino overdensity, based on kinetic field theory. Kinetic field theory is a particle-based theory for cosmic structure formation and in this work we apply it for the first time to massive neutrinos. The gravitational interaction is expanded in a perturbation series and we take into account the first-order contribution to the local density of relic neutrinos. For neutrino masses that are consistent with cosmological neutrino mass bounds, our results are in excellent agreement with state-of-the-art calculations. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 03702693
- Volume :
- 844
- Database :
- Academic Search Index
- Journal :
- Physics Letters B
- Publication Type :
- Academic Journal
- Accession number :
- 170721082
- Full Text :
- https://doi.org/10.1016/j.physletb.2023.138073