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Free-neutron decay after freeze-out
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Physics
Branch of physics
Cosmology
Big Bang nucleosynthesis
Deuterium bottleneck
Created
2026-09-24
Updated
2026-09-24
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Between weak freeze-out and
deuterium
formation,
beta decay
lowers the surviving
free
-
neutron
fraction
.
Ancestors
(6)
Deuterium bottleneck
Big Bang nucleosynthesis
Cosmology
Branch of physics
Physics
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Neutron-to-proton ratio
Past exam of the mathematics course of the University of Cambridge
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2001
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iii
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Paper 67
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2
/
iii
/
Solution
Past exam of the mathematics course of the University of Cambridge
/
2003
/
iii
/
Paper 55
/
3
/
Solution
Past exam of the mathematics course of the University of Cambridge
/
2005
/
iii
/
Paper 61
/
2
/
Solution
Past exam of the mathematics course of the University of Cambridge
/
2008
/
iii
/
Paper 62
/
3
/
iv
/
Solution
Past exam of the mathematics course of the University of Cambridge
/
2008
/
iii
/
Paper 62
/
3
/
v
/
c
/
Solution
Past exam of the mathematics course of the University of Cambridge
/
2008
/
iii
/
Paper 73
/
4
/
ii
/
Solution
Past exam of the mathematics course of the University of Cambridge
/
2010
/
iii
/
Paper 53
/
2
/
i
/
a
/
Solution
Past exam of the mathematics course of the University of Cambridge
/
2012
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iii
/
Paper 53
/
2
/
ii
/
Solution
Past exam of the mathematics course of the University of Cambridge
/
2015
/
ii
/
Paper 4
/
8C
/
Solution
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