[ExI] How the James Webb telescope is reshaping cosmology

[BillK]

On Fri, 16 Dec 2022 at 15:46, <spike at rainier66.com> wrote:
>
> Ja so I hear.  But by my erroneous understanding, the universe at the first
> nanosecond would be perfectly uniform, hyperspherical.  Bur if any asymmetry
> appears later, it would need to exist somehow in that first nanosecond, and
> if so the symmetry woulda had to be broken at half a nanosecond and a
> quarter of a ns and so on, all the way back to the start, but that leads to
> just more mind-boggling questions.
>
> So... with that quantum fluctuation notion, we are forced to imagine
> something analogous to a particle-antiparticle pair which forms from the
> kind of quantum notion we still see today, but with a critical difference:
> the particle-antiparticle pair didn't recombine for some reason, or... they
> did something back then that they cannot do now: they somehow created a
> lasting visible impact on the universe in the very short time they existed.
>
> I get where some kind of quantum fluctuation could cause anisotropy, but it
> requires something we think doesn't happen now: particle-antiparticle pair
> formation where they somehow stay in existence.
>
> But...  How did they do that?  How did the first symmetry-breaking event,
> whatever it was, how did that happen?  Our current theory doesn't really
> explain it, but rather just kinda describes what must have happened with
> that blanket look-the-other-way phrase "...quantum fluctuations that
> occur..."  They occur?  Can we be a bit more specific on what that?  Answer:
> not yet, we still don't know.  Clearly something did somehow.  But what and
> how?
>
> spike
--------------------------------------------

The primordial fluctuations happened during the period of the initial
inflation of the universe.
Inflation then stopped and doesn't happen now. We can never know what
happened during the universe inflation period.
(I wasn't there to watch it either).  This is linked to the question
of why is there something rather than nothing? If the creation of
matter and antimatter was equal, why didn't they cancel each other out
completely? The answer must be that in our universe, creation was
slightly unequal and our universe was the result. That slight
inequality from quantum indeterminacy during inflation created our
universe.

BillK