Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2011-10-26
Physics
High Energy Physics
High Energy Physics - Phenomenology
arXiv admin note: substantial text overlap with arXiv:1107.0156 and arXiv:1009.1954
Scientific paper
We attempt to answer whether neutrinos and antineutrinos, such as those in the cosmic neutrino background, would clusterize among themselves or even with other dark-matter particles, under certain time span, say 1 Gyr. With neutrino masses in place, the similarity with the ordinary matter increases and so is our confidence for neutrino clustering if time is long enough. In particular, the clusterings could happen with some seeds (cf. see the text for definition), the chance in the dark-matter world to form dark-matter galaxies increases. If the dark-matter galaxies would exist in a time span of 1 Gyr, then they might even dictate the formation of the ordinary galaxies (i.e. the dark-matter galaxies get formed first); thus, the implications for the structure of our Universe would be tremendous.
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