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Big bang nucleosynthesis and the quark-hadron transition

1990; IOP Publishing; Volume: 353; Linguagem: Inglês

10.1086/168626

1538-4357

H. Kurki‐Suonio, Richard A. Matzner, Keith A. Olive, David N. Schramm,

High-Energy Particle Collisions Research

view Abstract Citations (107) References (31) Co-Reads Similar Papers Volume Content Graphics Metrics Export Citation NASA/ADS Big Bang Nucleosynthesis and the Quark-Hadron Transition Kurki-Suonio, Hannu ; Matzner, Richard A. ; Olive, Keith A. ; Schramm, David N. Abstract An examination and brief review is made of the effects of quark-hadron transition induced fluctuations on Big Bang nucleosynthesis. It is shown that cosmologically critical densities in baryons are difficult to reconcile with observation, but the traditional baryon density constraints from homogeneous calculations might be loosened by as much as 50 percent, to 0.3 of critical density, and the limit on the number of neutrino flavors remains about Nnu is less than or approximately 4. To achieve baryon densities of greater than or approximately 0.3 of critical density would require initial density contrasts R is much greater the 10e, whereas the simplest models for the transition seem to restrict R to less than of approximately 102. Publication: The Astrophysical Journal Pub Date: April 1990 DOI: 10.1086/168626 Bibcode: 1990ApJ...353..406K Keywords: Astronomical Models; Big Bang Cosmology; Hadrons; Nuclear Fusion; Particle Interactions; Phase Transformations; Quarks; Abundance; Boundary Value Problems; Density Distribution; Astrophysics; ELEMENTARY PARTICLES; NUCLEOSYNTHESIS full text sources ADS |