Post-big bang processing of the primordial elements

M. J. Balbes, R. N. Boyd, G. Steigman, D. Thomas

Research output: Contribution to journalArticlepeer-review

4 Scopus citations


We explore the Gnedin-Ostriker suggestion that a post-big bang photodissociation process may modify the primordial abundances of the light elements. We consider several specific models and discuss the general features that are necessary (but not necessarily sufficient) to make the model work. We find that with any significant processing, the final D and 3He abundances, which are independent of their initial standard big bang nucleosynthesis (SBBN) values, rise quickly to a level several orders of magnitude above the observationally inferred primordial values. Solutions for specific models show that the only initial abundances that can be photoprocessed into agreement with observations are those that undergo virtually no processing and are already in agreement with observation. Thus it is unlikely that this model can work for any nontrivial case unless an artificial density and/or photon distribution is invoked.

Original languageEnglish (US)
Pages (from-to)480-486
Number of pages7
JournalAstrophysical Journal
Issue number2 PART I
StatePublished - 1996


  • Cosmology: Theory
  • Early universe
  • Gamma rays: Theory
  • Nuclear reactions, nucleosynthesis, abundances


Dive into the research topics of 'Post-big bang processing of the primordial elements'. Together they form a unique fingerprint.

Cite this