Comparison of Two Distinct BBN Codes
Abstract
This paper compares the results of two SBBN codes developped independently by different teams of physicists. These two codes have significant differences that lead to a discrepency between their final mass fractions of Helium-4 of 0.003. This paper shows that the mass fractions of each code had different orders of convergence, and how the number of timesteps affects the accuracy of the mass fractions. At the end, the paper shows how to modify both codes so that their Helium-4 mass fractions agree to around 0.0001.
Turn this paper into a full lesson
ArcXiv compiles a staged curriculum from this paper: 8-12 lessons across beginner → advanced, synthesised section guides, visuals, flashcards, a quiz, exercises, and on-demand deep dives per section. Grounded in the abstract, never invented.