Abstract
We study the quark-hadron phase transition within an effectivemodel of QCD, and find that in a reasonable range of the mainparameters of the model, bodies with quark content between10-2 and 10 solar masses can have been formed in the earlyuniverse. In addition, we show that a significant amount ofentropy is released during the transition. This may imply theexistence of a higher baryon number density than isusually expected at temperatures above the QCD scale. Thecosmological QCD transition may then provide a natural way ofdecreasing the high baryon asymmetry created by anAffleck-Dine-like mechanism down to the value required byprimordial nucleosynthesis.
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