Particle and nuclear physics aspects of the big bang nucleosynthesis

초록

The Big Bang Nucleosynthesis is the pillars of modern cosmology. It has recently been suggested theoretically that axions which are candidate for dark matter particles in the standard particle theory could condensate between the epochs of nucleosynthesis and last photon scattering in the early universe, which would result in cooling of photons with the shift of baryon-to-photon ratio between the two epochs. This renders a solution to the overproduction problem of primordial 7Li abundance. However, there arises another serious difficulty of overpredicting primordial deuterium abundance. We propose a hybrid dark matter model with both axions and relic super-symmetric particles to solve these overproduction problems of the primordial deuterium and 7Li abundances simultaneously. We also review several different cosmological models for the Big Bang Nucleosynthesis. © Copyright owned by the author(s) under the terms of the Creative Commons Attribution-NonCommercial- ShareAlike Licence.