"Quantum error correction may be how the emergent fabric of space-time achieves its robustness, despite being woven out of fragile quantum particles."
Intriguing suggestion for the exquisite first person experiential stability of this mysterious space-time emerging from quantum soup in a holographic universe.... if this hypothesis maps to actual reality that is. The Dong, Silverstein and Torroba’s dS/dS model seems like an important step to conceptually enable a holographic universe with emergent properties of space-time (and maybe emergent gravity as well) in positively curved space time -- e.g. our universe -- in which the boundry layer must, by virtue of its in our case ever so slight positive curvature be infinitely in the future. This is a problem for any holographic projection (where is the screen... the lower dimensional boundary layer, if it is infinitely far off?) Still wrapping my head around this conceptual model, using mathematics from string theory (theoretical Randall-Sundrum throats) to help "uplift" each AdS, transforming the two saddle-shaped AdS spaces into bowl-shaped dS spaces, which are subsequenyly "glued" together. The CFTs (lower dimensional boundary layers) describing both hemispheres become coupled with each other, forming a single quantum system that is holographically dual to the entire spherical de Sitter space. Quite a neat trick that may help to further investigate the holographic universe hypothesis. As stated by Patrick Hayden, a theoretical physicist and computer scientist at Stanford who studies the AdS/CFT correspondence and its relationship to quantum error correction, said he and other experts are mulling over Dong, Silverstein and Torroba’s dS/dS model. He said it’s too soon to tell whether insights about how space-time is woven and how quantum gravity works in AdS space will carry over to a de Sitter model. “But there’s a path — something to be done,” Hayden said. “You can formulate concrete mathematical questions. I think a lot is going to happen in the next few years.” How Our Universe Could Emerge as a Hologram | Quanta Magazine | | | | | | | | | | | How Our Universe Could Emerge as a Hologram | Quanta Magazine Physicists have devised a holographic model of “de Sitter space,” the term for a universe like ours, that could give us new clues about the origin of space and time. | | | | -- 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 [email protected]. To post to this group, send email to [email protected]. Visit this group at https://groups.google.com/group/everything-list. For more options, visit https://groups.google.com/d/optout.
