The quark-hadron transition in the early universe

Details The quark-hadron transition in the early universe The quark-hadron transition in the early universe

May 1991

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991nupha.527..195a&link_type=abstract

Nuclear Physics A, Volume 527, p. 195-206.

Physics

Nuclear Physics

2

Scientific paper

The application of quantum chromodynamics to big bang cosmology predicts that the universe underwent a transition from a quark-gluon plasma to a confined hadronic phase when it was roughly 10-5 seconds old. A first order phase transition in QCD can produce baryon density inhomogeneities in an initially homogeneous universe. Neutron diffusion converts these density inhomogeneities into variations in the local ratio of neutrons to protons, and these variations can produce detectable features in the pattern of abundances produced in primordial nucleosynthesis. In addition, the deviation from equilibrium needed to drive the phase transition can result in the production of primordial magnetic fields.

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