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. J. Mullan},
  journal={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… 
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