Saturday, July 1, 2023

Sir Roger Penrose's best talk! Story of the Universe on quantum gravity society channel: Noncommutative Nuisance!

 Sir Roger Penrose - STORY OF THE UNIVERSE

I tried to get this to come up by searching youtube - NOTHING !! haha.

connected talk by Penrose - both left-handed and right-handed photons entangled at the same time - noncommutative nonlocality 

36 minutes in he brings up noncommutative algebra!!

If you know the algebras, you automatically know the points...Then there was a pause and he said, "But that's not true if it's a noncommutative algebra." And I thought, "Wow" - why did I think "wow?" Because this commutation rule between the twistors and their complex conjugates is already implicit in the things I've been telling you before...when you talk about the complex conjugates, it's really the differential...when I said Z and Z-bar are canonical conjugates as well as complex conjugates...that means when you look at the bar version that's really differentiation with respect to this version and if that's the differential operator... these are really noncommutating operators...you have these commutation rules...

This is one of the striking things about Twistor theory - you keep borrowing things from quantum mechanics...I'm trying to produce a classical spacetime....I find that very striking...it was right there at the beginning...now I'm borrowing the notions of the noncommutative algebras and so on....I don't have points here and points here - I simply have these algebras. I have these quantum algebras of these Zs... If you had a "ket space" - think of Dirac Operators...you get used to the algebra...But here you have something where the "ket space" can't be consistent over the whole space, and that's where you get something knew. The algebra makes sense over the whole space but the Ket space can not be kept consistent over the whole space. I think that's the right idea but to make it work has been a great nuisance.

 

 


 

 

 

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