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A linear programming approach to inhomogeneous primordial nucleosynthesis
Richard E. Leonard, Robert J. Scherrer
We examine inhomogeneous primordial nucleosynthesis for {\it arbitrary} distributions of the baryon-to-photon ratio , in the limit where neither particle diffusion nor gravi…
Differential neutrino heating and reduced He production from decaying particles in the early universe
Richard E. Leonard, Robert J. Scherrer
A decaying particle that dominates the energy density of the universe and then decays with a lifetime sec into electromagnetically-interacting particles can heat the…
Another Look at Gaussian Isocurvature Hot Dark Matter Models For Large- Scale Structure
Andrew A. de Laix, Rober J. Scherrer
We examine Gaussian isocurvature hot dark matter (massive neutrino) models for large-scale structure in which the initial density perturbations are produced in the baryons with a p…
Big Bang Nucleosynthesis in Crisis?
N. Hata, R. J. Scherrer, G. Steigman +4
A new evaluation of the constraint on the number of light neutrino species (N_nu) from big bang nucleosynthesis suggests a discrepancy between the predicted light element abundance…
Constraints on Self-Interacting Dark Matter
Andrew A. de Laix, Robert J. Scherrer, Robert K. Schaefer
We consider the growth of density perturbations in the presence of self--interacting dark matter, SIDM, proposed by Carlson, Machacek and Hall (1992). We determine the range of val…