> On 28 Apr 2018, at 23:23, Lawrence Crowell <[email protected]> > wrote: > > On Friday, April 27, 2018 at 11:40:22 AM UTC-5, Bruno Marchal wrote: > > > On 26 Apr 2018, at 13:42, Bruce Kellett <[email protected] > > <javascript:>> wrote: > > > > A news story from the Australian ABC shows that it is not just photons or > > silver atoms that can become entangled. This is interesting stuff...... > > > > > > http://www.abc.net.au/news/science/2018-04-26/quantum-physics-entanglement-shown-massive-objects-first-time/9687076 > > > > <http://www.abc.net.au/news/science/2018-04-26/quantum-physics-entanglement-shown-massive-objects-first-time/9687076> > > > > Wow! Impressive indeed. And that might plausibly play an important role in > unifying the quantum principles with gravitation. > Space-time might reduce into entanglement, maybe a sort of Dirac electron > dovetailing on itself and entangling with itself would do. > Not only there is only one person, playing hide and seek with itself, but > there would be only one particle, in the base of the sharable phenomenology > of matter! > > Take this with as much grains of salt you need. That is an impressive > success. It should help or at least inspire quantum computing on both the > theoretical and experimental issues. > > Would it help to test one-branch-influence at a distance? I doubt it. > > Bruno > > This is similar to what I said on the thread "entanglement." Entanglement is > a global property. Given a set of states with symmetry G, an entanglement > between them is a quotient of some of that symmetry, say H so that K = G/H. > We may think of the group G as > > G = K ⋉ H. > > K ⋉ H is the semi-join of the relations K and H, the set of all tuples in K > for which there is a tuple in H that are equal.If you have quantum states > that are entangled according to symmetries of common tuples the coset is then > a "modulo those symmetries." In this way an entanglement of two electrons > results in a net scalar field for the singlet state or a vector state for the > triplet state and the fermionic properties of the electrons have been removed > and replaced with this entangled boson state. This in fact has some bearing > on the moduli space for SU(2) gauge field and its relationship to the Dirac > operator as found by Atiyah and Singer. > > This is analogous to the standard idea of a base manifold with a principal > bundle. For S = M×P, where the transformations on the bundle P leaves the > configuration of a vector or tensor field on M invariant. If the bundle > structure is SO(3,1) ~ SU(2)×SU(1,1) and S = SO(3,2) then > > AdS_4 = SO(3,2)/SO(3,1) > > indicates how SO(3,1), the gauge-like symmetry of spacetime, is a principal > bundle over AdS_4. AdS_4 is the anti-de Sitter spacetime in four dimensions, > and we can then see that SO(3,2) is a spacetime with a Lorentz group > fibration. > > Spacetime is global, or at least the CFT_{n-1} on the boundary of AdS_n is > equvalent to the global field content of gravitation in the AdS_n. by very > similar means quantum mechanics and entanglements are global. Quantum field > theory though is local. There are causality conditions imposed on quantum > field theory that eliminate the nonlocality of quantum mechanics. With all > the "wonders" of quantum nonlocality it is odd that QFT destroys them, but > the nonlocal physics is on scales much smaller and of shorter time than most > high energy physics experiments and the range of detectors. However, with > black holes there is a lot of Einstein lensing and local Lorentz > transformations that make this simplification in QFT not so workable. We > therefore have the nonlocality of gravity in the AdS_n bulk and the dual > quantum field CFT_{n-1} on the boundary of AdS_n can mix. Nonlocality in the > gravitational bulk can be transferred to the CFT. More physically relevant is > that for a black hole the entanglement phase of a quantum system can become > transferred to the black hole or spacetime physics. In this way we may think > of spacetime as "built up" of quantum entanglements. > > As a result the nonlocal properties of quantum entanglement in curved > spacetime can be transformed into local properties, where the entanglement > phase is transferred to spacetime or a holographic screen such as on a black > hole. It is very similar to the local properties of gauge theory with a > principal bundle on a local patch, but where the overlap of these patches > determine gauge connections and fields. With what I am working with this is > how I see the development of gravitation from quantum fields. Since > gravitation is woven with quantum entanglements then for a small number of > degrees of freedom gravitation is "quantum," but for a large number it > assumes more of a classical-like structure.
It assumes? Or does it entail the appearance of the classical-like structure? What you say is very interesting, but I have not yet much understanding of QM+gravity. My own non expert and non rigorous (old) attempt leads to … to much white holes: there should be almost everywhere, but … I will need to revise a bit of differential geometry (where I am not so much at ease). I appreciate your idea here, and it might indeed bring some light on the “non-locality” issue, and perhaps even on how dreams glue together in arithmetic to lead to local, statistically stable spacetime-physical realities (and that would plausibly entail some relation with the Vertex Algebra, Moonshine, the exceptional group, and deep relation between Number theory and physics. Of course, I do not want to lose the connection with G*, so as to treat both qualia and quanta, and avoid person elimination, but that makes this approach much more harder, … We will get opportunity to dig more on this. Bruno > > LC > > -- > 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] > <mailto:[email protected]>. > To post to this group, send email to [email protected] > <mailto:[email protected]>. > Visit this group at https://groups.google.com/group/everything-list > <https://groups.google.com/group/everything-list>. > For more options, visit https://groups.google.com/d/optout > <https://groups.google.com/d/optout>. -- 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.
