One of the things about inflationary cosmology we should keep in mind is
that it implies there is a fundamental limit to what we can know. This
period from 10^{-35} seconds to 10^{-30} seconds had space expand by
60-efolds or e^{60} ~ 10^{26}. Hence, information at that time
corresponding to any curvature or other spacetime data was enormously
stretched out. Thus Planck scale data at 10^{-35}, was stretched to
10^{-9}m, which might correspond to coherent state gravitons. This was in a
region about .1 to 1 m in scale. Thus such data if we can read it is
imprinted on the CMB. It might be here! The quantum sources for this are
now over 2 trillion light years away. Sort of for the same reason we can
observe galaxies with z > 1. The CMB is with z = 1100, which means it is
being frame dragged out at 1100 times the speed of light. The source for
gravitons we might indirectly observe in the CMB data have z ~ 10^{60}!
The multiverse, a term I really do not like very well, just means the
vacuum state of the entire universe has a degeneracy or multivalued
structure and what we observe in this universe is one of them. These other
cosmogonies for all we know may just be radiative corrections to the
universe we observe. They would be off-shell conditions, similar to
interior graphs in a Feynman diagram. I think this is mostly likely the
case with high energy vacuum conditions on these other cosmogonies. The
problem is that we will have a very difficult time knowing which of these
alternatives is the case. Inflation implies our cosmos emerged in or from a
de Sitter vacuum with a huge cosmological constant. It is "eternally
inflating," which means any data concerning something outside the
observable universe may be extremely difficult or impossible to measure.
LC
On Tuesday, July 12, 2022 at 1:28:59 PM UTC-5 [email protected] wrote:
> Well said, but I do love the multiverse (at times) for its entertainment
> values. I also wonder as a few astronomers and physicists have postulated
> an infinite or much larger cosmos? In other words, what might lie for
> hundreds of billions or trillions of light years, beyond the Hubble Volume?
> Axions, virtual photons, a vast oceans of neutrinos, old deposed black
> holes, dimensions? One of the answers the Multiverse provides is simply
> what maps provided ancient cartographers, "Here be dragons."
>
> Spud, Cartographically speaking...
>
>
> -----Original Message-----
> From: Lawrence Crowell <[email protected]>
> To: Everything List <[email protected]>
> Sent: Mon, Jul 11, 2022 5:15 pm
> Subject: Re: Are there 10^272,000 Universes?
>
> I think it is best to think of these as calculational gadgets. To be
> honest I am not sure about the ontological status of these 10^{272,000}
> spacetimes or cosmogonies.
>
> LC
>
> On Monday, July 11, 2022 at 2:58:37 PM UTC-5 [email protected] wrote:
>
> Weepers. I am behind the times. Last I remember it was 10^500 universes as
> informed by Guth, Linde, Vilenkin, and the rest.
>
> F theory must me when ya hear 10^272K universes, ya yell out F#@CK!!!.
> Anyone willing to wager if some of have better shows than Netflix?
>
>
> -----Original Message-----
> From: Lawrence Crowell <[email protected]>
> To: Everything List <[email protected]>
> Sent: Mon, Jul 11, 2022 11:24 am
> Subject: Re: Are there 10^272,000 Universes?
>
> This is F-theory I presume.
>
> LC
>
> On Monday, July 11, 2022 at 10:09:58 AM UTC-5 [email protected] wrote:
>
> Are there 10^272,000 Universes? - Numberphile
> <https://www.youtube.com/watch?v=k_TEoUF12Yk>
>
> John K Clark See what's on my new list at Extropolis
> <https://groups.google.com/g/extropolis>
> rtu
>
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