On Sun, Dec 23, 2018 at 1:17 PM John Clark <[email protected]> wrote:
> On Sat, Dec 22, 2018 at 6:46 AM <[email protected]> wrote: > > *> If the temperature was non uniform when the BB occurred, if it >> occurred, why would a sudden increase in its volume, aka inflation, erase >> or wash out those non uniformities?* >> > > Regardless of how non-uniform the entire early universe may have been if > you kept looking at smaller and smaller volumes you'd eventually find a > size where thing were pretty uniform. > On what do you bas that assumption? Penrose makes the point that there is no reason to suppose that the initial state is not fractal -- grossly unsmooth on any scale, right down to the smallest! > If inflation theory is correct that small nearly uniform part of the > universe started to expand exponentially; that is to say it had a fixed > doubling time, every 10^-37 seconds the diameter of that small part of the > universe doubled, and in 10^-35 seconds it doubled a hundred times and > became our observable universe. It has continued to expand to this day but > at a much much more leisurely rate. > It has been pointed out many times that inflation is a model in search of a problem to solve. Monopoles and flatness are not really problems, and inflation does not solve the smoothness problem - vide above. Bruce > > >> > *OTOH, if the initial temperature were uniform, would that obviate the >> need for inflation, or would non uniformities tend to become manifest were >> it not for inflation?* >> > > Without inflation its very hard to understand how the temperature could be > uniform because there wasn't enough time for the temperature to equalize, > the distance parts of the universe were neven is causal comtact and yet > they are at the same temperature to one part in 100,000. > > John K Clark > -- You received this message because you are subscribed to the Google Groups "Everything List" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To post to this group, send email to [email protected]. Visit this group at https://groups.google.com/group/everything-list. For more options, visit https://groups.google.com/d/optout.
