I Are primordial fluctuations the source of all structure?

[Ahmedbadr132]

TL;DR Summary

Are primordial fluctuations the source of all structure?

Hello friends .
I was asking whether quantum fluctuations created not only large scale cosmological structure but also our human-scale structure.
There is no mention and analysis of this aspect of the theory .
Please can anyone analyze it for me . How these quantum fluctuations create our human scale density variations and also atomic scale.

 

[Ibix]

The initial fluctuations cause density variations that eventually collapse into galaxies, stars and planets. Quantum phenomena aren't completely predetermined, however, so the exact final structure isn't completely predetermined by the initial fluctuations because it also depends on random variation later in history.

 

[Ahmedbadr132]

The initial fluctuations cause density variations that eventually collapse into galaxies, stars and planets. Quantum phenomena aren't completely predetermined, however, so the exact final structure isn't completely predetermined by the initial fluctuations because it also depends on random variation later in history.

I do not think so
Quantum fluctuations are not random . They are governed by equations.

 

[Ibix]

Quantum fluctuations are not random . They are governed by equations.

The equations we have predict probabilities of outcomes. Exact outcomes are, however, unpredictable as far as we know. So yes, the fluctuations are random.

 

[PeterDonis]

I was asking whether quantum fluctuations created not only large scale cosmological structure but also our human-scale structure.

No, they didn't.

There is no mention and analysis of this aspect of the theory .

That's because the theory does not, and is not intended to, account for structure on human scales.

More generally, the theory, by which I assume you mean our best current cosmological model of the universe including quantum fluctuations that left "imprints" in the initial conditions at the end of inflation, does not, and is not intended to, account for any structure that is not the result of gravitational clumping due to inhomogeneities in density.

 

[phinds]

Quantum fluctuations are not random

You should be careful about making categorical statements of "fact" when your "fact" is in fact wrong. This is a a science forum and as member @PAllen said many moons ago

Note, we are not called the "idle speculation without understanding or knowledge forums".