Abstract
Primordial baryon-number fluctuations can be damped at temperatures ≊20 keV when the photon mean free path becomes larger than the high-density-region length scale. This dissipation process may result in mixing of the high- and low-density material on a time scale comparable to or shorter than that of the universal expansion. The nucleosynthesis yields in inhomogeneous cosmologies can be altered by this process for any . can be reduced to an abundance consistent with observations of Population II halo stars and the abundances of and can be reduced by several orders of magnitude.
- Received 17 October 1989
DOI:https://doi.org/10.1103/PhysRevLett.64.2607
©1990 American Physical Society