Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2000-04-27
Phys.Rev.Lett. 86 (2001) 2216-2219
Physics
High Energy Physics
High Energy Physics - Phenomenology
Version to appear in Phys. Rev. Lett., 4 pages, 1 figure. Difference to heterogeneous nucleation emphasized, amplitude of temp
Scientific paper
10.1103/PhysRevLett.86.2216
We investigate a new mechanism for the cosmological QCD phase transition: inhomogeneous nucleation. The primordial temperature fluctuations, measured to be $\delta T/T \sim 10^{-5}$, 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.
Ignatius J.
Schwarz Dominik J.
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