Tuesday, January 18, 2005

Quantum Resources

For those of you also interested in the advances of Quantum Mechanics, I am going to list some resources here for researching.

This is an introduction to the basic history of Quantum Philosophy.

A review of David Bohm's Wholeness and the Implicate Order.

And finally, the last in the series by SETI: Quantum Astronomy: A Cosmic-Scale Double-Slit Experiment

Although, as an ending to the series for me it is sort of anti-climatic, considering what I recently read about the Theory of Elementary Waves, an experiment to measure the speed of a wave to particle transition seems pointless, but I could be misunderstanding the emission of particles from the source and perhaps they do emerge from the wave. I'm just not exactly sure how to reconcile this last article with the TEW. My impression was that the particle and wave were seperate entities, and that both originated seperately from the source depending on the interference with each other.

8 Comments:

Blogger Andrew Dalton said...

I gave up on TEW about three years ago, for a couple of reasons. The first was the set of double-delayed-choice (DDC) experiments, which basically closed the the last loophole that would have allowed a local theory of QM to be compatible with the the previously observed violations of Bell's inequality. The second was the reaction of some of TEW's defenders to the DDC experiments, which consisted of a lot of handwaving and a bizarre insistence that TEW was somehow unaffected by what was plainly strong evidence against their theory. This led me to the conclusion that the main promoters of TEW were not being objective, and that I had nothing to gain by remaining on their e-mail list.

Interestingly, there has been a published experiment that at least partially resolves the infamous "measurement problem" of QM--that is, how the superposition of possibilities within the formalism of QM actually transfers into the single, solid reality that we observe. (Historically, the "solution" to this problem was to deny reality or to claim that consciousness somehow creates reality.) The experiment involves passing a beam of buckyballs (C70 molecules) through several diffraction gratings. Normally, these molecules show a strong wave character. However, the buckyballs become purely particle-like if they are greatly heated prior to passing through the gratings. The hot buckyballs emit many photons during their flight, and so become instantaneously entangled with the quantum states of the rest of the universe. This entanglement collapses their otherwise wave-like motion into a single path, and all of their quantum spookiness disappears! No conscious observer or even an experimental measurement (of the emitted photons) is necessary for this to happen.

5:44 PM  
Blogger Sarah Beth said...

Do you have a source for this? I'd love to read more. I'm going to follow up on my own also. Thanks for the tip!

10:39 AM  
Blogger Andrew Dalton said...

The original paper is in vol. 427 of _Nature_, p. 711 (Feb. 19, 2004). There is a short summary of the same experiment in the May 2004 issue of _Physics Today_.

5:05 PM  
Blogger Sarah Beth said...

Thank you very much. Those are excellent resources.

5:26 PM  
Blogger Sarah Beth said...

Excellent, expensive sources!

5:43 PM  
Anonymous white fence said...

Hi Sarah Beth, taking a little time today to see what magic marker will send me to that is interesting. Quantum Resources looks interesting and is a great read. Will also try magic marker in my e-travels. Have a super day!

3:01 PM  
Anonymous magic marker said...

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6:02 PM  
Anonymous solid wood said...

Hi Sarah Beth, I am enjoying some idle time and looking to see what plastic comb will bring up. Quantum Resources is certainly interesting and informative. plastic comb is a good word to bring into the conversation. Great post. Enjoy your day!

9:44 PM  

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