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"The trajectories tell themselves how to move." Now (that)statement completely blows my mind
The free will theorem of John H. Conway and Simon B. Kochen states that, if we have a free will in the sense that our choices are not a function of the past, then, subject to certain assumptions, so must some elementary particles. Conway and Kochen's paper was published in Foundations of Physics in 2006. They published a stronger version of the theorem in 2009.
The theorem states that, given the axioms, if the two experimenters in question are free to make choices about what measurements to take, then the results of the measurements cannot be determined by anything previous to the experiments. Since the theorem applies to any arbitrary physical theory consistent with the axioms, it would not even be possible to place the information into the universe's past in an ad hoc way. The argument proceeds from the Kochen-Specker theorem, which shows that the result of any individual measurement of spin was not fixed independently of the choice of measurements. As stated by Cator and Landsman regarding hidden variable theories: "There has been a similar tension between the idea that the hidden variables (in the pertinent causal past) should on the one hand include all ontological information relevant to the experiment, but on the other hand should leave the experimenters free to choose any settings they like."
Many Interacting Worlds say particles have definite positions it's just some of the particles in our universe are from parallel universes. These particles have definite trajectories but it becomes fuzzy because particles from universe A has seeped into universe B so things just appear fuzzy or indeterminate.
The catch is that one has to have many interacting worlds. In fact, quantum behavior itself may be regarded as evidence of definite particles from alternate universes poking through into our own, causing this blurry picture at the quantum scale.
"That's the most radical and interesting part of this approach," he said. "Assuming that reality is now described by many trajectories instead of a wave, we have to ask what these trajectories really mean, physically. The only sensible interpretation is to think of each trajectory as representing a different world. In each world, nothing is wave-like or indefinite. Everything is sharp and well-defined. But there are now multiple worlds. The variation across these worlds is where quantum uncertainty or 'fuzziness,' together with all other quantum behavior, actually comes from."
It also posed interesting questions about the physics philosophy on the wave and what it means if you don't need it, he said. Quantum trajectories may be more than just a computational tool. They actually may explain what is going on at the quantum level.
Poirier explained that in the classical physical world where humans operate, everything is in a definite state with respect to velocity and position. Think airplanes and apples falling out of trees. We can calculate where those things are and where they're going.
originally posted by: neoholographic
The reason this occurs is because quantum mechancious tells us that conscious choice creates reality.
Counterfactual quantum cryptography (CQC) is used here as a tool to assess the status of the quantum state: Is it real/ontic (an objective state of Nature) or epistemic (a state of the observer's knowledge)? In contrast to recent approaches to wave function ontology, that are based on realist models of quantum theory, here we recast the question as a problem of communication between a sender (Bob), who uses interaction-free measurements, and a receiver (Alice), who observes an interference pattern in a Mach-Zehnder set-up. An advantage of our approach is that it allows us to define the concept of "physical", apart from "real". In instances of counterfactual quantum communication, reality is ascribed to the interaction-freely measured wave function (ψ) because Alice deterministically infers Bob's measurement. On the other hand, ψ does not correspond to the physical transmission of a particle because it produced no detection on Bob's apparatus. We therefore conclude that the wave function in this case (and by extension, generally) is real, but not physical. Characteristically for classical phenomena, the reality and physicality of objects are equivalent, whereas for quantum phenomena, the former is strictly weaker. As a concrete application of this idea, the nonphysical reality of the wavefunction is shown to be the basic nonclassical phenomenon that underlies the security of CQC.
Alice transfers a single photon to the nested interferometer; it is detected by three single photon detectors, D0, D1 and Df. If D0 or D1 click, Alice concludes a logic result of one or zero. If Df clicks, the result is considered inconclusive, and is discarded in post-processing. After the communication of all bits, the researchers were able to reassemble the image—a monochrome bitmap of a Chinese knot. Black pixels were defined as logic 0, while white pixels were defined as logic 1.
A fundamental scientific assumption called local realism conflicts with certain predictions of quantum mechanics. Those predictions have now been verified, with none of the loopholes that have compromised earlier tests.
Known as the BIG Bell test, it involved over 100,000 people using their cell phones to contribute data to 12 quantum research institutes around the world. These volunteers—known as Bellsters—played a video game to instruct over 100 scientists how to perform measurements on entangled particles and superconducting devices.
The experiment was meant to close the “freedom-of-choice” loophole in quantum experiments, which basically amounts to the notion that particles may influence the way researchers choose to measure them. By having these measurements dictated by a diverse group of 100,000 strangers, however, it would be impossible to predict in advance how the measurements would be made. This would, in principle, give researchers insight into whether the world exists independently of our observations of whether our observations shape the world.
The first results from the study were published today in Nature, and suggest that our observation of the world strongly influences it.
In both Bell tests, the results “clearly” contradicted Einstein’s theory of local realism once again. It was the first time a Bell test wasn’t subject to the freedom-of-choice loophole. According to Mitchell, however, there are still other loopholes that need to be closed, but the size of this test has effectively shut the book on this particular loophole for good.