Primordial heavy element production

@article{Rauscher1995PrimordialHE,
  title={Primordial heavy element production},
  author={Thomas Rauscher and F. Thielemann},
  journal={arXiv: High Energy Astrophysical Phenomena},
  year={1995}
}
A number of possible mechanisms have been suggested to generate density inhomogeneities in the early Universe which could survive until the onset of primordial nucleosynthesis and generate neutron-rich regions. In this work we are not concerned with how the inhomogeneities were generated but we want to focus on the effect of such inhomogeneities on primordial nucleosynthesis. One of the proposed signatures of inhomogeneity, the synthesis of very heavy elements by neutron capture in a primordial… 

References

SHOWING 1-10 OF 20 REFERENCES
Production of heavy elements in inhomogeneous cosmologies
The incorporation of quantum chromodynamics into big bang cosmology predicts that the universe shifted from a quark-gluon plasma to a meson gas when it was roughly 10 μs old. If this change is due to
Evolution of heavy-element abundances as a constraint on sites for neutron-capture nucleosynthesis
Observed heavy-element abundance ratios in the halo and the disk are compared with one-zone models of galactic chemical evolution. These comparisons provide useful insight into the kinds of stellar
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.
Evidence for a dispersion in the lithium abundances of extreme halo stars
Knowledge of the primordial lithium abundance (Li p ) helps to constrain cosmological parameters and to discriminate between models of primordial nucleosynthesis; the best current probe of Li p is
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 are
Evolution of Beryllium Abundances in the Galactic Halo
We have used a spectrum synthesis code to measure Be abundances for three halo stars and an upper limit for a fourth. The abundances are discussed considering models for Galactic and primordial
The R-process and nucleochronology
...
...