On 2 July 2014 10:57, meekerdb <meeke...@verizon.net> 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 everything-list+unsubscr...@googlegroups.com. To post to this group, send email to everything-list@googlegroups.com. Visit this group at http://groups.google.com/group/everything-list. For more options, visit https://groups.google.com/d/optout.
