Big-bang nucleosynthesis and the baryon density of the universe

@article{Copi1995BigbangNA,
  title={Big-bang nucleosynthesis and the baryon density of the universe},
  author={Craig J Copi and David N. Schramm and Michael S. Turner},
  journal={Science},
  year={1995},
  volume={267},
  pages={192 - 199}
}
For almost 30 years, the predictions of big-bang nucleosynthesis have been used to test the big-bang model to within a fraction of a second of the bang. The agreement between the predicted and observed abundances of deuterium, helium-3, helium-4, and lithium-7 confirms the standard cosmology model and allows accurate determination of the baryon density, between 1.7 x 10(-31) and 4.1 x 10(-31) grams per cubic centimeter (corresponding to about 1 to 15 percent of the critical density). This… Expand

Paper Mentions

Big Bang Nucleosynthesis and the Density of Baryons in the Universe
Now that extragalactic deuterium observations are being made, Big Bang Nucleosynthesis (BBN) is on the verge of undergoing a transformation. Previously, the emphasis was on demonstrating theExpand
Helium and Big Bang nucleosynthesis
Abstract The existence of a universal primordial helium abundance is a significant piece of evidence in support of there having been a phase of high temperature and density in the early universe,Expand
The deuteron confronts big bang nucleosynthesis
Recent determinations of the deuterium abundance, 2 H/H, in high redshift Lyman limit hydrogen clouds challenge the usual picture of primordial nucleosynthesis based on “concordance” of theExpand
The Hot Big Bang and Beyond
The hot big-bang cosmology provides a reliable accounting of the Universe from about 10-2 sec after the bang until the present, as well as a robust framework for speculating back to times as early asExpand
Primordial nucleosynthesis in the next millenium
Abstract Primordial nucleosynthesis is and shall continue to be a cornerstone of nuclear astrophysics and cosmology. It is the key probe of the early universe at times of order 1 to 10 4 sec. TheExpand
Big Bang Nucleosynthesis in the Precision Era
Recent measurements of the primeval deuterium abundance and improved nuclear input to big-bang nucleosynthesis (BBN) precisely peg the baryon density, \( {\Omega_B}{h^2} = 0.0189\pm 0.0019 \). TheExpand
Cosmological Implications of the First Measurement of the Local ISM Abundance of 3He
Deuterium plays a crucial role in testing big bang nucleosynthesis. However, its chemical evolution is intertwined with that of 3He. Gloeckler & Geiss's new measurement of the 3He abundance and theExpand
Model-independent predictions of big bang nucleosynthesis
Abstract We derive constraints from standard (with N ν = 3) BBN arising solely from two cosmologically produced nuclides, 4 He and 7 Li, from which the extrapolation to primordial abundances isExpand
Cosmological Halos: A Search for the Ionized Intergalactic Medium
Standard big bang nucleosynthesis predicts the average baryon density of the universe to be a few percent of the critical density. Only about one-tenth of the predicted baryons have been seen. AExpand
Cold Dark Matter
Motivated by inflation, the theory of big-bang nucleosynthesis, and the quest for a deeper understanding of fundamental forces and particles, a paradigm for the development of structure in theExpand
...
1
2
3
4
5
...

References

SHOWING 1-10 OF 193 REFERENCES
Big Bang Nucleosynthesis and the Quark - Hadron Transition
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 areExpand
Enhanced heavy-element formation in baryon-inhomogeneous big bang models
Author(s): Jedamzik, K; Fuller, GM; Mathews, GJ; Kajino, T | Abstract: We show that primordial nucleosynthesis in baryon-inhomogeneous big-bang models can lead to significant heavy-element productionExpand
Primordial nucleosynthesis redux
The abundances of D, He-3, He-4, and Li-7, are presently recalculated within the framework of primordial nucleosynthesis in the standard hot big band model, in order to estimate the primordialExpand
Experimental, computational, and observational analysis of primordial nucleosynthesis
We present a comprehensive evaluation of the current status of the standard theory of primordial nucleosynthesis. We determine the 12 nuclear reactions most important for the production of the lightExpand
Primordial nucleosynthesis and the abundances of beryllium and boron
The recently attained ability to make measurements of Be and B as well as to put constraints on Li-6 abundances in metal-poor stars has led to a detailed reexamination of big bang nucleosynthesis inExpand
Primordial nucleosynthesis: a critical comparison of theory and observation
Primordial nucleosynthesis is reexamined in the context of a detailed comparison of theory and observation. A new argument is presented to show how the observed abundances of D and /sup 3/He can beExpand
Cosmological quantum chromodynamics, neutron diffusion, and the production of primordial heavy elements
A simple one-dimensional model is used to describe the evolution of neutron density before and during nucleosynthesis in a high-entropy bubble left over from the cosmic quark-hadron phase transition.Expand
On the Galactic Evolution of $D$ and $^3He$
The determined abundances of primordial $^4He$ and $^7Li$ provide a basis with which to test the standard model of big bang nucleosynthesis in conjunction with the other two light element isotopesExpand
Population II 6Li as a Probe of Nucleosynthesis and Stellar Structure and Evolution
We discuss the importance of Population II Li-6 as a diagnostic for models of primordial nucleosynthesis, cosmic-ray nucleosyntheses in the early Galaxy, and the structure and evolution of metal-poorExpand
Big bang nucleosynthesis constraints on the tau neutrino mass
Abstract We re-examine the effect of a massive τ neutrino on primordial nucleosynthesis. An improved calculation of the evolution of the total energy density is presented for both a stable τExpand
...
1
2
3
4
5
...