I think Yanniru is combining a couple of different ideas that could be treated separately. One idea is communication via extra dimensions, which leads to the time-like/space-like issue humanino stated. The other idea is the "stringy thread" connecting the electron/positron pair. If such a...
I've seen the statement repeated in many places that a stable knot comprising 1D curves cannot be created in 4D, since it's always possible to untie the knot by moving in the 4th dimension (whereas it is possible to create a stable knot in 4D using 2D surfaces). Can anyone point me to an...
One of the intriging things to me about Causal Dymanical Triangulations is the implication of a fractal spacetime structure at small scales. Hunting around for related theories I came across Laurent Nottale's Scale Relativity theory. References to the theory after the late 90s are hard to...
Marcus -
I did read the paper, and have just gone back to read the two earlier papers they reference to make sure I'm not missing something obvious. My initial reaction was, and still is, that while I really like the direction they're taking, the specific choices they're making for topogical...
I'm particularly interested in how they'll incorporate the other SM gauge groups (SU(3)XU(1)). I have to think there's some connection with Witten's '89 paper linking representations of gauge groups with link invariants.