tag:blogger.com,1999:blog-10614348.post3465339996444034315..comments2024-01-22T11:26:37.599-08:00Comments on TGD diary: Do you already believe in emergent gravity?Matti Pitkänenhttp://www.blogger.com/profile/13512912323574611883noreply@blogger.comBlogger2125tag:blogger.com,1999:blog-10614348.post-70428081605599019922017-07-14T19:42:37.904-07:002017-07-14T19:42:37.904-07:00I think that I have seen his article. Do not remem...I think that I have seen his article. Do not remember for sure without checking. It is ironic that I must here take conservative attitude concerning space-time emergence and take continuous space-time as given although adelic physics forces to bring number theory (p-adic number fields, extensions of rationals) as basic element of physics of cognition and discretization emerges from finite cognitive resolution now. <br /><br />The notion of emergence is far from obvious. What emerges and from what? In TGD gauge fields are not fundamental thet emerge from induced spinor fields. Einstein's general relativistic space-time emerges from description of physics in terms of space-time surfaces. A lot of things emerge but 3-space or space-time do not emerge from nothing.<br /><br />One can of course ask whether space-time could emerge as moduli space. The problem here is that moduli spaces are typicallt highly unique and space-time as a notion is not and in quantum theory one cannot even speak about single space-time. In TGD imbedding space is (highly at least) unique and the world of classical worlds (WCW,typical moduli space) is unique from its geometric existence and in replaces space-time (point like particles are replaced with points).Matti Pitkanenhttp://tgdtheory.finoreply@blogger.comtag:blogger.com,1999:blog-10614348.post-7010314852992199832017-07-14T17:03:59.672-07:002017-07-14T17:03:59.672-07:00Matti, once you have time take it to actually watc...Matti, once you have time take it to actually watch a lecture of Xiao-Gang Wen to see what he saying. The lattice description comes about half way in the story, he doesn't start with. Sheeverhttps://www.blogger.com/profile/12931916936543585461noreply@blogger.com