Relies of cosmological quark-hadron phase transition - art. no. 067301

We propose that the density fluctuations amplified by the vanishing sound v elocity effect during the cosmological quark-hadron phase transition lead t o quark-gluon plasma lumps decoupled from the expansion of the universe, wh ich rapidly transform to quark nuggets (QNs) before they disperse out. Assu ming a power-law spectrum of density fluctuations, we investigate the param eter ranges for the QNs to play the role of baryonic dark matter and give i nhomogeneities that could affect big-bang nucleosynthesis within the observ ational bounds of CMBR anisotropy.