Big bang nucleosynthesis and the quark-hadron transition

Journal Article · Sat Mar 31 23:00:00 EST 1990 · Astrophysical Journal; (USA)

DOI:https://doi.org/10.1086/168626· OSTI ID:6865036

Kurki-Suonio, H; Matzner, R A; Olive, K A; Schramm, D N ^[1]

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1. Drexel Univ., Philadelphia, PA (USA) Texas Univ., Austin (USA) Minnesota Univ., Minneapolis (USA) Chicago Univ., IL (USA)

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 N(sub nu) 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 10(exp e), whereas the simplest models for the transition seem to restrict R to less than of approximately 10(exp 2). 43 refs.

• OSTI ID: 6865036
• Journal Information: Astrophysical Journal; (USA), Journal Name: Astrophysical Journal; (USA) Vol. 353; ISSN ASJOA; ISSN 0004-637X
• Country of Publication: United States
• Language: English

Related Subjects

640106* -- Astrophysics & Cosmology-- Cosmology
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
ABUNDANCE
BOUNDARY-VALUE PROBLEMS
COSMOLOGICAL MODELS
COSMOLOGY
DENSITY
ELEMENTARY PARTICLES
FERMIONS
HADRONS
INTERACTIONS
MATHEMATICAL MODELS
NUCLEOSYNTHESIS
PARTICLE INTERACTIONS
PHASE TRANSFORMATIONS
PHYSICAL PROPERTIES
POSTULATED PARTICLES
QUARKS
SYNTHESIS