Big bang nucleosynthesis: The strong nuclear force meets the weak anthropic principle

  title={Big bang nucleosynthesis: The strong nuclear force meets the weak anthropic principle},
  author={J. Macdonald and D. Mullan},
  journal={Physical Review D},
  • J. Macdonald, D. Mullan
  • Published 2009
  • Physics
  • Physical Review D
  • Contrary to a common argument that a small increase in the strength of the strong force would lead to destruction of all hydrogen in the big bang due to binding of the diproton and the dineutron with a catastrophic impact on life as we know it, we show that provided the increase in strong force coupling constant is less than about 50% substantial amounts of hydrogen remain. The reason is that an increase in strong force strength leads to tighter binding of the deuteron, permitting… CONTINUE READING
    13 Citations
    Binding the diproton in stars: anthropic limits on the strength of gravity
    • 10
    • Highly Influenced
    • PDF
    The weak scale from BBN
    • 35
    • PDF
    $\theta$-dependence of light nuclei and nucleosynthesis
    • PDF
    The Degree of Fine-Tuning in our Universe -- and Others
    • 5
    • PDF
    The Entropic Landscape
    • 30
    • PDF
    Fine-tuned Universe
    • PDF


    Observational limits on the time evolution of extra spatial dimensions.
    • Barrow
    • Physics, Medicine
    • Physical review. D, Particles and fields
    • 1987
    • 76
    • PDF
    Standard model of the early universe
    • 56
    Principles of stellar evolution and nucleosynthesis
    • 1,122
    Energy in the universe
    • 76
    • PDF
    • Rolfs, et al., Nuclear Physics A 656, 3
    • 1999