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Oscillation effects on thermalization of the neutrinos in the universe with low reheating temperature
Open accessAbstract
We study how the oscillations of the neutrinos affect their thermalization process during the reheating period with temperature $O(1)$ MeV in the early universe. We follow the evolution of the neutrino density matrices and investigate how the predictions of big bang nucleosynthesis vary with the reheating temperature. For the reheating temperature of several MeV, we find that including the oscillations makes different predictions, especially for $^{4}\mathrm{He}$ abundance. Also, the effects on the lower bound of the reheating temperature from cosmological observations are discussed.
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Cites
Spergel, D. N., Verde, L., Peiris, H. V., Komatsu, E., Nolta, M. R., Bennett, C. L., Halpern, M., Hinshaw, G., Jarosik, N., Kogut, A., et al. (2003) · The Astrophysical Journal Supplement Series · doi:10.1086/377226 · Cited by 10,976
Effects of cosmological moduli fields on cosmic microwave background
Moroi, T., & Takahashi, T. (2001) · Physics Letters B · doi:10.1016/s0370-2693(01)01295-3 · Cited by 938
Cited by
Relic neutrino decoupling including flavour oscillations
Mangano, G., Miele, G., Pastor, S., Pinto, T., Pisanti, O., & Serpico, P. D. (2005) · Nuclear Physics B · doi:10.1016/j.nuclphysb.2005.09.041 · Cited by 760
Primordial nucleosynthesis: From precision cosmology to fundamental physics
Iocco, F., Mangano, G., Miele, G., Pisanti, O., & Serpico, P. D. (2009) · Physics Reports · doi:10.1016/j.physrep.2009.02.002 · Cited by 472
Bounds on very low reheating scenarios after Planck
de Salas, P. F., Lattanzi, M., Mangano, G., Miele, G., Pastor, S., & Pisanti, O. (2015) · Physical Review D · doi:10.1103/physrevd.92.123534 · Cited by 321
Metadata
- Authors
- Ichikawa, K., Kawasaki, M., & Takahashi, F.
- Venue
- Physical Review D
- Publisher
- American Physical Society (APS)
- Published
- 2005-08-23
- Volume
- 72
- Issue
- 4
- ISSN
- 0556-2821 (ISSN-L)
- 1550-7998
- 1550-2368
- OpenAlex
- W2020717147
- Cited by
- 199
- References
- 2
- FWCI
- 7.63
- Type
- journal article
- Language
- en
- Open access
- green
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- Ichikawa, K., Kawasaki, M., & Takahashi, F. (2005). Oscillation effects on thermalization of the neutrinos in the universe with low reheating temperature. Physical Review D. https://doi.org/10.1103/physrevd.72.043522
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