Supermassive singularity the cause of the Big Bang?

[Arman777]

Where did you get that equation from?

https://arxiv.org/abs/0912.5297

 

[PeterDonis]

https://arxiv.org/abs/0912.5297

Equation 1.1? In that equation, ##t# is the time after the Big Bang the the PBH forms; basically the equation is saying that the more time has elapsed since the Big Bang, the larger a PBH formed at that time would be. This is because the more massive a black hole is, the less "dense" it is (where "density" here means "the mass of the black hole divided by the volume of a Euclidean 3-sphere with a surface area equal to the black hole's horizon area"--which is not the actual physical density of the hole, since a black hole doesn't have a well-defined density, but plays the role of a density in the authors' proposed model for PBH formation).

 

[Arman777]

his is because the more massive a black hole is, the less "dense" it is

I did no understand this part.