Quark–gluon plasma as the possible source of cosmological dark radiation
The effective number of neutrinos, Neff, obtained from CMB fluctuations accounts for all effectively massless degrees of freedom present in the Universe, including but not limited to the three known neutrinos. Using a lattice-QCD derived QGP equation of state, we constrain the observed range of Neff...
| Published in: | Physics Letters B |
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| Main Authors: | , |
| Format: | Article |
| Language: | English |
| Published: |
Elsevier
2015-02-01
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S0370269314009046 |