Limits on cosmological variation of strong interaction and quark masses from big bang nucleosynthesis, cosmic, laboratory and Oklo data
Jan, 2002Citations per year
Abstract:
Recent data on cosmological variation of the electromagnetic fine structure constant from distant quasar (QSO) absorption spectra have inspired a more general discussion of possible variation of other constants. We discuss variation of strong scale and quark masses. We derive the limits on their relative change from (i) primordial Big-Bang Nucleosynthesis (BBN): (ii) Oklo natural nuclear reactor, (iii) quasar absorption spectra, and (iv) laboratory measurements of hyperfine intervals.Note:
- 10 pages 2 figurs: second version have several references added and some new comments
- 98.80.Cq
- cosmological model
- fundamental constant: time dependence
- quantum chromodynamics: Lambda parameter
- heavy quark
- mass: strangeness
- nucleus nucleus: nuclear reaction
- quasar
- spectrum: absorption
- fundamental constant: hyperfine structure
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