Quest. about Size of very early Univ. and gravity

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TrekJunky - 30 Jun 2009 02:53 GMT

Hello All,

I'm a layman who is fascinated by Physics. I have a question which
will prove my lack of understanding of Physics. I understand that
Stephen Hawking has been working on trying to get Relativity to "mesh"
with Quantum Mechanics for a long time.

Here is my question: When looking at the Universe when space was much
smaller than it is now, does anything unusual happen to the Curved
SpaceTime from higher density in the early Universe? Is it even
correct to ask about Curved SpaceTime in Quantum terms?

Thanks in advance for your answers!

TrekJunky

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N:dlzc D:aol T:com (dlzc) - 30 Jun 2009 06:46 GMT

Dear TrekJunky:

> I'm a layman who is fascinated by Physics. I have a
> question which will prove my lack of understanding of
> Physics. I understand that Stephen Hawking has
> been working on trying to get Relativity to "mesh"
> with Quantum Mechanics for a long time.

Yes. And so have many others. Each discipline "paves over" the
domain of the other in order to arrive at answers in finite
"processing" time, so it is a very difficult task.

> Here is my question: When looking at the Universe
> when space was much smaller than it is now, does
> anything unusual happen to the Curved SpaceTime
> from higher density in the early Universe?

Not really expected to be. There are issues with the Big Bang
event, because it involves a singularity. But that is a problem
for our math here/now, and extrapolation beyond our verifiable
data set, and ultimately is an event we will never see again and
cannot duplicate.

> Is it even correct to ask about Curved SpaceTime
> in Quantum terms?

You can ask, but no answer would be correct.

David A. Smith

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Androcles - 30 Jun 2009 12:29 GMT

> Hello All,
>
> I'm a layman who is fascinated by Physics. I have a question which
> will prove my lack of understanding of Physics.

Does that need proving? Was anyone ever in doubt?

I understand that

> Stephen Hawking has been working on trying to get Relativity to "mesh"
> with Quantum Mechanics for a long time.
[quoted text clipped - 7 lines]
>
> TrekJunky

It would be logical of you to ask Mr. Spock.

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Natural Science Forum / Physics / Relativity / June 2009

Quest. about Size of very early Univ. and gravity