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Number of interaction of early universe
I am reading An introduction to particle dark matter by Stefano Profumo. I am struggling on a derivation.
As given from the text, in the early universe $\frac{\dot{T}}{T}=-\frac{\dot{a}}{a}=-H$, ...
- 567
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Can the "Boltzmann brain" concept inform discussions of cosmology?
The Boltzmann brain was originally discussed as a sort of thought-experiment or aid
to reflection on what might possibly happen in the universe. Its first discussion was
in the context of thermal ...
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