Comments for Wavewatching http://wavewatching.net Observations on the nascent quantum computing industry & physics Fri, 31 Oct 2014 15:05:01 +0000 hourly 1 http://wordpress.org/?v=4.0 Comment on The Unintentional Obsfuscation of Physics by Elangel Exterminador http://wavewatching.net/2014/10/27/the-unintentional-obsfuscation-of-physics/#comment-81939 Fri, 31 Oct 2014 15:05:01 +0000 http://wavewatching.net/?p=3325#comment-81939 The ShaoLin Master told the Professor: “Ye shall now take the perilous path of relearning, the one which is full of hurts and bruises.”!

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Comment on The Unintentional Obsfuscation of Physics by Quax http://wavewatching.net/2014/10/27/the-unintentional-obsfuscation-of-physics/#comment-81928 Wed, 29 Oct 2014 23:49:05 +0000 http://wavewatching.net/?p=3325#comment-81928 Very interesting. Didn’t know about this algebraic peculiarity either. Intriguing line of thought that may shed some light on why quantization occurs in the first place. Schrödinger thought he had the answer when he proposed his wave model, but obviously crucial aspect have been missing in that picture.

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Comment on The Unintentional Obsfuscation of Physics by Hans van Leunen http://wavewatching.net/2014/10/27/the-unintentional-obsfuscation-of-physics/#comment-81926 Wed, 29 Oct 2014 11:10:29 +0000 http://wavewatching.net/?p=3325#comment-81926 It is not generally known that separable Hilbert spaces can only handle number systems that form division rings. This was inescapably proven by Maria Pia Solèr in the sixties of the last century.
Only three suitable division rings exist: the real numbers, the complex numbers and the quaternions. The fist two are contained in the last one. Thus the most elaborate separable Hilbert space is a quaternionic Hilbert space. “Division algebras and quantum theory” by John Baez. http://arxiv.org/abs/1101.5690

Also most scientist do not notice what separable stands for. It means that eigenspaces of operators can only contain a countable number of eigenvalues. For example operators whose eigenspaces contain all rational numbers may exist, but operators whose eigenspaces contain all (or a closed set of) real numbers can only exist in a non-separable Hilbert space, such as a Gelfand triple. By the way, each infinite dimensional separable Hilbert space owns a Gelfand triple.

Another fact that hardly anyone knows is that quaternionic number systems, coherent sets of quaternionic numbers and continuous quaternionic functions exits in 16 versions that only differ in their discrete symmetry sets. This is due to the four dimensions of quaternions. For example quaternionic number systems exist in left handed and right handed versions.

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Comment on The Unintentional Obsfuscation of Physics by Henning Dekant http://wavewatching.net/2014/10/27/the-unintentional-obsfuscation-of-physics/#comment-81921 Wed, 29 Oct 2014 03:24:16 +0000 http://wavewatching.net/?p=3325#comment-81921 Thanks for the book tip. Fuller was certainly an outsized character, a mind way too broad to fit into our ever more fractured science disciplines.

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Comment on The Unintentional Obsfuscation of Physics by Mark Martel http://wavewatching.net/2014/10/27/the-unintentional-obsfuscation-of-physics/#comment-81918 Tue, 28 Oct 2014 18:58:09 +0000 http://wavewatching.net/?p=3325#comment-81918 The book was Synergetics by Fuller, 1982.

Besides alt history driven by different outcomes of wars, etc. there are tales based on alternate tech. Pavane by Keith Roberts has an England where “land trains” filled the niche of cars and trucks. Phillip K. Dick’s Man in the High Castle shows the effects of a WWII won by the axis powers, including suborbital rocket travel and a US west coast dominated by Japanese culture. And a Jules Verne novel was rediscovered recently where he envisioned 20th century life. Not really alt history but a very retro view of how things might have gone.

I’d like to see a book where Darwinian selection is discovered centuries before the industrial revolution. Farmers were building up breeding methods for a long time…

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Comment on The Unintentional Obsfuscation of Physics by Mark Martel http://wavewatching.net/2014/10/27/the-unintentional-obsfuscation-of-physics/#comment-81917 Tue, 28 Oct 2014 18:34:47 +0000 http://wavewatching.net/?p=3325#comment-81917 Hi Henning, Most sf alt-history seems driven more by standard historical event changes than science as you say. I can recommend Timescape by Gregory Benford, involving tachyon messaging to avoid an eco-disaster. Niven’s short story All The Myriad Ways deals with public reaction to living in a multiverse–fatal apathy. Your math and physics are beyond me but I was captivated back around 1980 by a huge Buckminster Fuller tome collecting all his geometric work, amazing graphics plus his math and unintentionally obfuscating language. Worth a browse if you can find a copy. Aloha, Mark Martel (friend of Deb’s)

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Comment on Je me souviens by Henning Dekant http://wavewatching.net/2014/10/23/je-me-souviens/#comment-81891 Fri, 24 Oct 2014 14:48:11 +0000 http://wavewatching.net/?p=3328#comment-81891 One of my favorite books :-)

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Comment on Je me souviens by Elangel Exterminador http://wavewatching.net/2014/10/23/je-me-souviens/#comment-81883 Thu, 23 Oct 2014 18:11:51 +0000 http://wavewatching.net/?p=3328#comment-81883 “What’s true of all the evils in the world is true of the plague as well. It helps men to rise above themselves. All the same, when you see the misery it brings, you’d need to be a madman, or a coward, or stone blind, to give in tamely to the plague.”
-Albert Camus, The Plague, Part 2

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Comment on Progressing from the God Particle to the Gay Particle by Henning Dekant http://wavewatching.net/2014/10/05/progressing-from-the-god-particle-to-the-gay-particle/#comment-81824 Wed, 15 Oct 2014 20:02:35 +0000 http://wavewatching.net/?p=3304#comment-81824 In isolation these are great achievements but I just don’t see how they are going to scale this up (i.e. getting several qubits across a chip to interact in a controlled fashion). That’s why I am still not very bullish on quantum dots for QC.

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Comment on Progressing from the God Particle to the Gay Particle by Henning Dekant http://wavewatching.net/2014/10/05/progressing-from-the-god-particle-to-the-gay-particle/#comment-81823 Wed, 15 Oct 2014 19:58:01 +0000 http://wavewatching.net/?p=3304#comment-81823 Good question. The way I think about it, this is just another way of sampling which behaves slightly different than in classical systems. In my view the differences arise from the fact that classical probability can be understood as a sub-set of the broader quantum one. That’s why I always regarded weak measurements as not particularly interesting.

At first glance the weak value argument in the first paper seems sound, I think they really pin-point a mistake there, but I don’t think that this mistake applies to most of the sampling that goes under the name ‘weak measurements’ (I may be wrong though, as I really haven’t paid much attention to this field).

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