Possible Cosmological Implications of the Quark-Hadron Phase Transition
  We study the quark-hadron phase transition within an effective model of QCD, and find that in a reasonable range of the main parameters of the model, bodies with quark content between $10^{-2}$ and 10 solar masses can have been formed in the early universe. In addition, we show that a significant amount of entropy is released during the transition. This may imply the existence of a higher baryon number density than what is usually expected at temperatures above the QCD scale. The cosmological QCD transition may then provide a natural way for decreasing the high baryon asymmetry created by an Affleck-Dine like mechanism down to the value required by primordial nucleosynthesis. 
N. Borghini (1), W. N. Cottingham (2), R. Vinh Mau (1) ((1) LPTPE,   Universite Paris VI, (2)University of Bristol)