The effect of primordial temperature fluctuations on the QCD transition

Details The effect of primordial temperature fluctuations on the QCD transition The effect of primordial temperature fluctuations on the QCD transition

2000-10-23

arxiv.org/abs/hep-ph/0010269v1

Physics

High Energy Physics

High Energy Physics - Phenomenology

6 pages, 1 figure. To appear in the Proceedings of Strong and Electroweak Matter 2000 (SEWM2000), Marseilles, France, 14-17 Ju

Scientific paper

We analyze a new mechanism for the cosmological QCD first-order phase transition: inhomogeneous nucleation. The primordial temperature fluctuations are larger than the tiny temperature interval, in which bubbles would form in the standard picture of homogeneous nucleation. Thus the bubbles nucleate at cold spots. We find the typical distance between bubble centers to be a few meters. This exceeds the estimates from homogeneous nucleation by two orders of magnitude. The resulting baryon inhomogeneities may affect primordial nucleosynthesis.

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