Quark matter and cosmology

David N. Schramm, Brian Fields, David Thomas

Research output: Contribution to journalArticlepeer-review


The possible implications of the quark-hadron transition for cosmology are explored. Possible signatures are discussed such as dark matter candidates like strange nuggets or planetary mass black holes. Much discussion is devoted to the possible role of the transition for cosmological nucleosynthesis. It is emphasized that even an optimized first order phase transition will not significantly alter the nucleosynthesis constraints on the cosmological baryon density nor on neutrino counting. However, it is noted that Be and B observations in old stars may eventually be able to be a signature of a cosmologically significant quark-hadron transition. It is pointed out that spallation cannot produce a B Be ratio below 7.6. A supporting signature for cosmological would be Be and B ratios to oxygen that greatly exceed galactic values. At present, all data is consistent with a spallagenic origin.

Original languageEnglish (US)
Pages (from-to)267-278
Number of pages12
JournalNuclear Physics, Section A
Issue number1-2
StatePublished - Jul 20 1992
Externally publishedYes

ASJC Scopus subject areas

  • Nuclear and High Energy Physics


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