Now the really interesting thing about quantum physics isn’t so much the physics but the philosophy behind it all. Why is it so? What does it mean? That these philosophical issues matter and should be of interest is because you, the macro reader, is made up entirely – from the ground up – out of the residents of the realm of the micro, the inhabitants of the realm of the quantum.
If you take quantum physics to its logical conclusion, you can only deduce that those residents of the quantum realm, those elementary particles, have some very strange properties bordering on self-awareness, consciousness, quasi-free will, a sort of ‘mind’ of their own but programmed with the social mores of quantum-land. They have the ability to ‘know’ things about their external world and their relationship to that. They can make decisions with respect to those relationships and act accordingly within their programming. They are not totally unresponsive and inert little billiard balls.
I’m also aware that such an assertion crosses the boundary between my being rational and being irrational. I mean how could an electron for example ‘know’ anything and make decisions? Such a proposition makes alien abductions, the Loch Ness Monster and the realm of astrology seem downright normal and acceptable and within the realm of conventional logic! But there is experimental evidence and observations to back this up.
Case Study #1 – The Double Slit Experiment: Take the infamous double slit experiment (referenced in any and all tomes on quantum physics). Send a stream (lots and lots and lots) of photons at two parallel slits that have a target board of sorts behind them that show where the photons land after they pass through the dual slits. The photons pass through both slits and form on the target board a classic wave interference pattern, thereby showing that electromagnetic radiation, in this case visible light, is a wave. So far; so good. Now fire one light photon at a time at the dual slits, such that one photon will pass through the slits and reach the target board before the next photon is released. What you get – wait for it – is a classic wave interference pattern! That’s ridiculous. It’s as if one photon passes both slits at the same time and interferes with itself. That’s very funny peculiar, not funny ha-ha. In fact, it’s straight out of the “Twilight Zone” again. But wait, it gets worse. Now rerun the one photon at a time experiment but set up a detection device at each slit in order to determine if the photon goes through just one slit or through both. What happens is that the lone photons, fired one at a time, is indeed detected going through one slit or the other slit but not both simultaneously and thus, as you would expect, the classic wave interference pattern vanishes to be replaced with two separate and apart lines on the target board. That’s totally nuts since without detectors at the slits you get that classic wave interference pattern; with detectors, no such pattern. The question is, how did the photon ‘know’ the detectors were there and thus change their behaviour?
Case Study #2 – Entanglement: In the double slit experiment where one photon went through both slits simultaneously, the photon was said to be in a state of superposition – it could be in two places at the same time. In this new study we have two particles with a common origin, linked in some way, and released together out into the wilderness, sort of like Hansel and Gretel. Unlike the fairy tale, the two particles fly off in differing directions. So far; so good. The particles are not quite identical, just like Hansel and Gretel are not quite identical, but complementary, as one particle might be the antiparticle of the other or one is either spin up or spin down and the other is either spin down o spin up. The two particles are again considered to be in a state of superposition – each is simultaneously a particle and its antiparticle; or both are in a state of spin up and spin down. In other words, as in the case of the double slit experiment, there is doubt about who’s who and what’s what until a detector is put into place. I this example both particles fly off until they are on opposite sides of the Universe. Then, a detector is put into position in the pathway of one of the pair (i.e. – someone peeks). When someone peeked (i.e. – the detector detected) as in the double slit experiment, the photon was required to go into an either/or state. Ditto here. If the particle turns out to be Hansel, you know the particle on the opposite side of the Universe must be Gretel. Or, if one particle is observed to be an antiparticle, or say spin up, its partner clear across the Universe instantaneously must cease its superposition of state and become a particle or solidify into a spin down state. That one particle across the Universe somehow ‘knows’ that the superposition of state jig is up since its counterpart has been caught in the act (i.e. – observed or detected). Einstein had a phrase for this. He called it “spooky action at a distance”. Einstein wasn’t happy since this instantaneous communication implied superluminal speeds, faster than the speed of light, which his Special Theory of Relativity gave the thumbs down to. Now apparently, if I’m to understand things correctly, it’s noted that restrictions on the speed of light as the ultimate cosmic speed limit only applies if actual information is being transmitted. Pure gibberish can be transmitted instantaneously and ‘communication’ between two entangled particles isn’t actually information. How the cosmos ‘knows’ whether or not something is, or is not, bona fide information and thus employs photons travelling at the speed of light, or gibberish and thus allows instantaneous ‘communication’, is, IMHO gibberish! The whole issue is resolved if you just eliminate the concept of superposition of state. Something cannot both be and not be at the same time in the same place.
Case Study #3 – Electron Energy Levels: We are aware from elementary chemistry class that there is a cloud of electrons that surround the nucleus (protons plus neutrons) of atoms. Nucleus plus electrons equal whole atoms. The electrons only exist in specific quantified energy states. If they didn’t, they’d collapse and crash into the nucleus and that would be the end of chemistry as we know it! An electron can absorb a unit (or a quanta) of energy, or maybe two (or more) units and jump up a notch or two or three, or give off a unit(s) of energy and drop down a notch or two or three (but never to zero and hit the nucleus). The energy is absorbed or emitted by the absorption or emission of photons. So here comes along a photon minding its own business and runs smack into an electron which gobbles it up and jumps into the next higher energy state. Okay, that makes sense, so far; so good. That’s an example of cause-and-effect. The issue arising is how and why does the electron release the photon from bondage at a later stage and drop back down a level in energy? There seems to be causality working in one direction (absorbing the photon) but not the other way around. So it almost appears as if the self-aware electron wills itself rid of the photon at some point in time and drops down into a more comfortable energy state. However, I gather that there’s a possible explanation in that another photon comes along, hits the electron, and knocks the first photon out thus dropping the electron to a lower energy state. Since nobody has ever witnessed a photon hitting an electron, I guess that’s all conjecture. Still, any natural explanation is better than none.
However there are many other instances apart from the scenario of an electron in ‘orbit’ where electron-photon intersections (absorption and emission) are described, most notably in those [Richard] Feynman diagrams known and loved by particle physicists everywhere. These diagrams illustrate the various electron-photon exchanges but lack explanation as to how photons are given off or escape from the electron’s clutches. It’s all rather mysterious, rather like radioactive decay.
While on this subject, I should point out another anomaly. Electrons can have just-so quanta energy levels, like 1, 2 3, etc. but not in-between. Energy states of say 1.5 or 2.2 or 3.7 are not allowed. So, when an electron jumps up or down an energy level or two to another energy level, they must do so without going through the spatial intermediaries. First they are here; then they are there, but never in-between. That’s all closely related to the concept of quantum tunnelling where say you are on one side of a wall and then you are on the other side of the wall but you didn’t go through, up over, dig under, or go around the wall. You can’t do that, but elementary particles can. Neat trick that one.
Case Study #4 – Neutrinos: There are three types of neutrinos. There are electron-neutrinos; muon-neutrinos and tau-neutrinos (just like there are electrons, muons and tau particles). Neutrinos, and their antiparticle counterparts, are given off in numerous ways like in various nuclear reactions taking place in the hearts of stars, including our Sun. Billions of these neutrinos pass right through you (without harm) each second. So far; so good. What’s odd is that while in transit, each morphs or shape-shifts into the other neutrino forms and back again and forth and back and forth. It’s like one was in its birthday suit, one in casual wear and one in formal attire and on their journey always keep changing their attire. There doesn’t appear to be any causal reason for this, so perhaps this is what is known as neutrino free will!
Case Study #5 – Antimatter: We’re all aware of the concept of antimatter. Each fundamental particle has an equal but opposite counterpart called its antiparticle. The most common example is the electron and the anti-electron, otherwise known as the positron. We’re also aware that when a particle meets and greets its antiparticle you get a big ka-boom! The two will annihilate each other producing pure energy. But, and this is my understanding, it has to be a particle and its very own corresponding antiparticle. So an electron meets and greets a positron – ka-boom. And so if a proton and an anti-proton meet and greet – ka-boom. But if a proton and an anti-electron (positron) meet and greet – nothing happens because they are not equal and opposite though they are matter and antimatter. Ditto if an anti-proton and neutron meet and greet – nothing happens. The question arises, how do these various particles and antiparticles recognise friend from foe? When foes meet like the positron and the electron, its annihilation. When a positron meets a proton, it’s a friendly meet and greet. How do these particles ‘know’?
Case Study #6 - Quantum Tunnelling: Every now and again we just want to bust out of our day-to-day existence and escape to that greener grass on the other side of the fence. Alas, there’s usually some barrier, economic, geographical, language, cultural, etc. that prevents us from busting out. Wouldn’t it be nice if we could wave a magic wand and bust through whatever factor(s) is holding us back? Well, sadly to say, it’s not usually the case where we can. Lottery wins are few and far between, and even if money were no object, there are other considerations holding us back from that get-up-and-go. Subatomic particles also face barriers in their micro world, barriers of matter and energy, fields and forces, which prevent them from doing their thing. However, subatomic particles have sold their soul to the devil that inhabits quantum land and in exchange have been issued a get-out-of-jail card. It’s called quantum tunnelling and it suggests that subatomic particles can tunnel around, over or through any matter and energy, force or field, restriction. The interesting bit is that the tunnelling happens for no reason at all, involves absolutely no effort on the part of the tunneller, and it all happens instantaneously. So, an electron on one side of a brick wall can instantaneously find itself on the other side without any causality in operation. It’s like our Edgar Rice Burroughs hero John Carter who just wishes himself to Barsoom (i.e. – Mars) and there he is! Perhaps quantum tunnelling is the micro version of the macro wormhole!
In general I think you’d need to agree that there are some decidedly odd goings on here from lack of causality to tiny particles that seem to ‘know’ how to behave either when face-to-face with an observer, or in other either/or situations. Now the odds that these tiny particles actually have the ability to make decisions and exhibit free will divorced from causality, and to ‘know’ things that influence that decision making process is, well nearly infinity to one against. Yet, these anomalies exist and have been verified again and again. So, IMHO, the only other rational explanation is that there must be some sort of guiding power or force, some sort of as yet uncovered hidden variables, maybe programming of some sort, which is responsible. Exactly what that might be – well your guess is as good as mine.
To be continued.
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