Density Fluctuations from the Quark-hadron Epoch and Primordial Nucleosynthesis

Download or read book Density Fluctuations from the Quark-hadron Epoch and Primordial Nucleosynthesis written by and published by . This book was released on 1987 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: We present a simple thermodynamic model of the quark-hadron transition in the early universe and use this model to estimate how the size of isothermal baryon number fluctuations which emerge from this epoch depend on the temperature of the transition and other uncertain quantities of the underlying QCD physics. We calculate primordial nucleosynthesis in the presence of these fluctuations and find that .cap omega. = 1 in baryons is possible only if the measured abundances of 7Li and 2H reflect substantial destruction during the evolution of the galaxy. 29 refs., 7 figs.