Baryon Number Penetrability as a Measure of Isothermal Baryon Number Fluctuations in the Early Universe

1999/04/22 by B. K. Patra, V. J. Menon, C. P. Singh
Physics and Astronomy · #hep-ph

paper · pdf

published as Nucl.Phys. B564 (2000) 145-156 · 18 pages LaTeX including five figures in eps format

arxiv created 1999/04/22 · arxiv updated 2009/11/30

Abstract

We have examined the efficiency of baryon-number transport mechanism across the phase boundary in a cosmological quark-hadron phase transition through the proper estimate of baryon-number penetrability <Σ_h>. For this purpose we have derived first the double-pair creation probability P_b in terms of single-pair creation probabilty per unit time and unit volume κ_m and then obtained an analytical expression for <Σ_h >. Our calculation is free from the uncertainty of the value of double-pair creation probability per unit time and unit volume κ_b which was used as a free parameter in earlier calculations. Finally the variations of double-pair creation probability P_b as well as <Σ_h> with temperature are shown and compared with other known results.

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