![]() The rest are somewhat curled up microscopically, but in a very clever way that assures that one of those dimensions is particularly long and important. ![]() What makes this equivalence possible? The point is that even though the string theory exists in nine spatial dimensions (plus one time), only three spatial dimensions extend out to infinity and are visible macroscopically. The conjecture implies that these theories (not necessarily supersymmetric themselves) are also exactly equivalent to a supersymmetric string theory, with quantum gravity, but now on a more complicated curved space. This includes formation of hadrons out of gluons and quark-like particles, for instance, along with many extra hadrons not found in the real world. theories that exhibit remarkably real-world-like behavior. Within a short time, Maldacena’s conjecture was extended to theories that are more similar to the real world - gluon/quark/etc. In this post I won’t go into the mountains of evidence here in favor of this “AdS/CFT” or “gauge/string duality” conjecture. How can a theory with quantum gravity be equivalent to one without quantum gravity? and how can two theories with different numbers of space-dimensions be equivalent? Nevertheless, the conjecture is almost certainly correct.
0 Comments
Leave a Reply. |