tag:blogger.com,1999:blog-5439168179960787195.post3629632142691457155..comments2024-03-28T17:13:01.117+10:00Comments on Condensed concepts: Is space-time emergent?Ross H. McKenziehttp://www.blogger.com/profile/09950455939572097456noreply@blogger.comBlogger1125tag:blogger.com,1999:blog-5439168179960787195.post-51693462718064898342011-03-12T19:24:32.197+10:002011-03-12T19:24:32.197+10:00The orthodox view is that these ideas don't wo...<a href="http://arxiv.org/abs/1010.6134" rel="nofollow">The orthodox view</a> is that these ideas don't work because of the "Weinberg-Witten theorem", a no-go theorem which says you can't make a massless spin 2 boson out of gauge bosons, and that string theory gets around this because the theorem implicitly assumes that the graviton will exist in the same space as the gauge fields, whereas in string theory gravity emerges along with the extra dimension.Mitchellhttps://www.blogger.com/profile/10768655514143252049noreply@blogger.com