Quantum Coherence of Relic Neutrinos

Details Quantum Coherence of Relic Neutrinos Quantum Coherence of Relic Neutrinos

2008-11-26

arxiv.org/abs/0811.4370v2

Phys.Rev.Lett.102:201303,2009

Astronomy and Astrophysics

Astrophysics

4 pages, 4 figures; matches publication in PRL

Scientific paper

10.1103/PhysRevLett.102.201303

We argue that in at least a portion of the history of the universe the relic background neutrinos are spatially-extended, coherent superpositions of mass states. We show that an appropriate quantum mechanical treatment affects the neutrino mass values derived from cosmological data. The coherence scale of these neutrino flavor wavepackets can be an appreciable fraction of the causal horizon size, raising the possibility of spacetime curvature-induced decoherence.

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