On 2 July 2014 10:57, meekerdb <[email protected]> wrote: > On 7/1/2014 3:43 PM, LizR wrote: > > My question is: Does Eternal Inflation make expansion the result of > fundamental physics? E.I. appears to be time asymmetric > > It's not asymmetric. In the Carroll-Chen model universes have a minimal > point and "expand" in both directions, as measured in physical time. In > coordinate time, it's universe that contracts to a few Planck volumes and > the re-expands. Coordinate time is just a label in the equations - so you > can say they "really" expand, even though the mathematics are symmetric. >
Ah yes, that's interesting. Not that I am an expert on anti de-Sitter space and all that, but it looks to my limited understanding as though they are saying that eternal inflation is somehow occurring in a timeless (or perhaps time-symmetric) manner, and big bangs define their own time direction. I suspected the latter but couldn't quite grok the former, maybe because the word "inflation" seems to imply a biult in AOT. At some point I will get around to reading this, and hopefully understand the idea better as a result... http://arxiv.org/pdf/hep-th/0410270v1.pdf -- 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 http://groups.google.com/group/everything-list. For more options, visit https://groups.google.com/d/optout.
