First order quark-gluon/hadron transition may affect cosmological nucleosynthesis

In a model of a first order quark-gluon/hadron phase transition in which the hadronic phase is considered as vacuum bubbles growing in the quark-gluon background with chiral symmetry broken inside the bubble, we find the estimate for the length scale associated with inhomogeneities originated during the transition, 10 m ≲ ℓ ≲ 40 m, being sufficient to produce significant effects on cosmological nucleosynthesis.