QCD phase transition in the inhomogeneous universe

We investigate a new mechanism for the cosmological QCD phase transition: i nhomogeneous nucleation. The primordial temperature fluctuations, measured to be deltaT/T similar to 10(-5), are larger than the tiny temperature inte rval in which bubbles would form in the standard picture of homogeneous nuc leation. Thus the bubbles nucleate at cold spots. We find the typical dista nce between bubble centers to be a few meters. This exceeds the estimates f rom homogeneous nucleation by 2 orders of magnitude. The resulting baryon i nhomogeneities may affect primordial nucleosynthesis.