21–30 of 73 posts
Earlier quoted context omitted.
Superposition is not stopping as far as we know it. Cat typically weighs 3,6 – 4,5 kg. De Broglie Wavelength of 4 kg cat moving 1×10^-10 m/s is 1.7×10^14 m. You cat is in many places at once, those places are just very close to each other.
That exponent for the wavelength is wrong. It should be more like 1.6x10^-33m. At least it should be negative.
The scientist who find the point where super position stops will get the Nobel price for sure, I could give you a hint, it is less than my cat, I'm sure it never been in two places at once (Schrödinger is right about his cat too)
Superposition is not stopping as far as we know it. Cat typically weighs 3,6 – 4,5 kg. De Broglie Wavelength of 4 kg cat moving 1×10^-10 m/s is 1.7×10^14 m. You cat is in many places at once, those places are just very close to each other.
Then the two realities interfere with each other to form the probabilistic pattern at the detector. So, according to MWI, reality has "merged" again?
If we accept the mulitiverse idea of MWI, doesn't that mean at some point particles aren't able to marge with their branched-reality versions?
> That’s big enough that the researchers had to account for factors like gravity and the rotation of the Earth in designing the beam emitter Will this provide us with insight into how gravity and the quantum world relate?
The effects described here are purely Newtonian - in particular, the earth's rotation and gravity are the same "kind" of impact, just an F=ma force which deflects the beam of molecules in the same manner that gravity deflects a stream of water out of a garden hose or the earth's rotation deflects a Foucault pendulum. In general I think I quantum gravitation experiments would require very low-mass particles in a very high-mass gravitational well: high-mass particles on Earth will be dominated by Newtonian gravity and quantum effects will be extremely difficult to detect.
The relation this does give insight on is between Newtonian and quantum physics - the fuzzy boundary between determism and randomness - which is itself interesting, but also better understood. Perhaps a more precise measurement may reveal that the gravitational deflection is significantly more/less than expected from classical gravitation in a way that can only be explained with a new quantum theory, but that is quite speculative and almost certainly not supported by the evidence in this particular experiment.
Since the molecule of 2000 atoms exists in two places, it doubles the mass. Doesn’t this break the law of conservation of mass and energy. Can someone please explain how this is possible.
Finally they can get started on quantum superposition human teleporters. I want to see Neptune but I want to be home by dinner.
Since the molecule of 2000 atoms exists in two places, it doubles the mass. Doesn’t this break the law of conservation of mass and energy. Can someone please explain how this is possible.
From a quantummechanic standpoint its wrong to say, that its at two places at once. I really dont like the Headline. Superposition means, that it didnt decide for one of the two possible states, and so these both exist in superposition.
I dislike this description of things existing in two places at once, this is because I believe that objects exist in one place, then they move to the next place.
The interference pattern only highlights the probability of where the particle will be when it's next observed, or "where it moved to". The object does not interfere with itself, it's the probability wave that is interfering with itself, and the wave is something separate from the object but is related to it.
The particle does not exist anywhere between its current position and the next. It does not travel in a "linear" or other way, if at time t it was at position 0 and at time tNext it was at position 1, at time tNext*0.5 you cannot assume it was at position 0.5, or both "position 0.5, slightly higher up" and "position 0.5, slightly lower down" at the same time.
In another way, in my mind, the object exists here, then it exists there, but it did not exist at the time between here and there, unless you happened to have observed it. Then of course "there" would be where you have made the observation because you have given it something to interact with.
I guess my issue is, at what moment does the article say that it exists in two places at once? Are they inferring this from the fact that there is an interference pattern?
To quote: "[1] Every particle or group of particles in the universe is also a wave—even large particles, even bacteria, even human beings, even planets and stars. [2] And waves occupy multiple places in space at once. [3] So any chunk of matter can also occupy two places at once."
I guess my problem is with [1] "is also a wave". I think that "there is a wave related to the object" but not "the object IS a wave". Then [3] does not follow.
Since the molecule of 2000 atoms exists in two places, it doubles the mass. Doesn’t this break the law of conservation of mass and energy. Can someone please explain how this is possible.
Earlier quoted context omitted.
Superposition is not stopping as far as we know it. Cat typically weighs 3,6 – 4,5 kg. De Broglie Wavelength of 4 kg cat moving 1×10^-10 m/s is 1.7×10^14 m. You cat is in many places at once, those places are just very close to each other.
Something I don't quite understand about quantum mechanics and the MWI... At the point the atom passes through the diffraction grating, it has a quantum superposition. According to MWI, reality has "branched", right? Then the two realities interfere with each other to form the probabilistic pattern at the detector. So, according to MWI, reality has "merged" again? If we accept the mulitiverse idea of MWI, doesn't tha…