New answers tagged dark-energy
2
votes
Formula for rate of expansion of the universe vs distance?
The relationship between proper distance and the rate of change of proper distance is Hubble's law. So
$$ v(r_0) = H_0 r_0 \ .$$
Note that $H_0$ is the Hubble parameter at the present epoch. The ...
- 146k
5
votes
If w bosons can create dark matter neutrinos by decay, can they also create dark energy?
The W boson has a lifetime of $3\times 10^{−25}$ seconds. So any big bang W bosons will have long decayed. So they are not a dark energy source. Also, they produce "hot" relativistic decay ...
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