Last time I started with wave-functions of quantum systems and the Schrödinger equation that describes them. The wave-like nature of quantum systems allows them to be merged (superposed) into combined quantum system so long as the coherence (the phase information) remains intact.
The big mystery of quantum wave-functions involves their apparent “collapse” when an interaction with (a “measurement” by) another system seemingly destroys their coherence and, thus, any superposed states. When this happens, the quantum behavior of the system is lost.
This time I’d like to explore what I think might be going on here.
Quantum physics is weird. How weird? “Too weird for words,” as we used to say, and there is a literal truth to words being inadequate in this case. There is no way to look at the quantum world that doesn’t break one’s mind a little. No one truly understands it (other than through the math). It’s like trying to see inside your own head.
Since we’re clueless we make up stories to fit the facts. Some stories advise that we just keep our heads down and do the math. (Which works very well but leaves us thirsty.) Other stories seek to quench that thirst, but every story seems to stumble somewhere.
One of quantum’s biggest and oldest stumbling blocks is wave-function collapse.
Time for another Friday News Dump! The good news is that these are about quite recent news articles that caught my eye. (The bad news is that I might dump some older ones on you if there’s room.)
Usually I present them, more-or-less, in order of their interest to me… and apparently to my readers, since the comments seem to always involve the first article. So this time I’m going to save the meatier one (in my eyes) for last hoping the others get some interest.
So the lineup is: Dog brains, static electricity, quantum DNA, and free will.
Too Weird For Words!
I started with the idea of physical determinism and what it implies about free will and the future. Then I touched on chaos theory, which is sometimes raised as a possible way around determinism (short answer: nope). In the first article I drew a distinction between “classical” mechanics and quantum mechanics because only at the quantum level is there any sign of randomness in reality.
It turns out that the quantum world is decidedly weird, and while we have math and models that seem to describe it extremely well, it can honestly be said that no one actually understands it. This time I’ll tell you about some of that weirdness and how it may (or may not) apply to the world as we know it.
The key question here is whether our brains make use of quantum effects.
I think, I think.
A bit more than three years ago I began this blog intending to write about matters of existence and consciousness (and science and computing). Since then I’ve tried on other hats, stories from my past and present, opinions and views about society, even the occasional post above movies or TV. But those meatier topics — the ones the blog is named for — still attract me.
There are three problems, though. Firstly, other sites specialize in that sort of thing and do it very well. Secondly, they aren’t topics that attract visitors — my meaty posts get even fewer reads than my less weighty posts. And thirdly, I may not be as good as explaining things as I would like to be.
That said, sometimes I just can’t help myself, so here we go again.