Initial Conditions;

 

Inflation by head-start with 10-to-the-80 (+/-) incompressible neutrons, having no

"unoccupied" discrete spaces between them in a volume the size of the horizon of

a black hole were it to have that mass, whose equilibrium then gets disrupted (bang).

Such a mother-of-all black holes would have the lowest possible "Hawking temperature".

 

(Keeping in mind that heat is not a form of energy, but energy transfer.)

By itself the knowledge that all the "stuff" in the early universe was in an

extremely small space doesn't really say anything about its early microscopic

kinetic energy. Its temperature could have been near zero followed by a massive

warmth producing (further) inflationary period which was then followed by the

expansion and cooling which brought us to where we are today.

+1 in my fake rep point sytem for having posted in speculations by yourself.

 

Anyway, even if your speculation is correct, it does not answer the question where does that "stuff" comes from.

Such a mother-of-all black holes would have the lowest possible "Hawking temperature".

 

It wouldn't be a black hole. A black hole is caused by a concentration of matter in otherwise (approximately) uniform space.