Recent content by oknow

A recent Veritasium video demonstrates via experiment that light from a laser pointer takes every possible.path from source to destination, as promulgated by Richard Feynman. These paths need not be straight lines and thus can wander all of spacetime. That implies light is taking an infinite, or...

Did the math during my undergrad days, too long ago to recall specifics. Wouldn't help even if I still had my notebooks since what I'm seeing here is quantum and gravty interplay is not yet well understood. It did occur to me that we can put a large ball of lead into a superposition, certainly...

I'd done the math and still did not see why decoherence does not happen. Afraid I do not understand how such a why question can be "wrong." Thanks for the other explanations. Sounds like gravity in relation to quantum effects is still poorly understood. I find it interesting that coherence is...

In this thought experiment, there is no need to add a gravitational field detector because the question is why the lab and the experimenter standing adjacent (the environment) do not serve as such. After all, if we place a 10 kg lead ball at one corner of the lab, the gravitational field...

A double-slit experiment can be run and get similar results using either photons or small particles that have mass, such as molecules. Why doesn't the gravitational field of molecules in the experiment reveal which-way information to the surrounding environment, and trigger decoherence and loss...

I'll check out the references mentioned, thanks. I'm wondering about the source of a fresh superposition at a more fundamental level than, say, other circuitry, electricity supply, gates, etc. Yes, in my example the qubit starts at a known state because I just observed it. Assume at that point...

Yes, I'm thinking quantum computing qubits. Since such qubits are generally reusable for additional computations, I believe a fresh superposition must develop at some point after observation ceases. I am curious when that superposition refresh, if you will, is thought to happen, and by what process.

When I observe a qubit's state, decoherence happens such that I find the qubit in a particular state. After I cease observing a qubit's state, what physical process causes a fresh superposition of states to develop? Is zero-point energy at least a contributor?

I was referring to the explanation of the miwoi model (a combination of Many Worlds and Uncertainty Principle). It's deceptively simple, yet is also consistent with other things quantum such as tunneling, Ehrenfest's theorem, zero-point energy, and more. The model's prediction that matter's...

If you are looking for something to help you visualize single-photon interference in the double slit experiment, consider the following model. Imagine each possible state of the experiment's photon exists in a different world. So, in one world the photon traces a certain path to the detector...

Thanks for your reply. I'm thinking of effects like quantum tunneling. alpha particle emission, current leakage from electronics, etc. in which particles escape their classical range limits. AFAIK, without uncertainty, those effects would not occur, and their corresponding transfer of thermal...

Per the Heisenberg uncertainty principle, a particle does not have a precisely defined location. Does such uncertainty contribute to the transfer of thermal energy (i.e. entropy)? Is uncertainty the primary means for the transfer of thermal energy at the quantum level?

OK, thanks, what about the following more-complex scenario #5: A double-slit experiment isolated within an ideal box is activated by a timer, and runs for a brief but sufficient period to build an interference pattern, or not, on its detector screen. The screen saves the pattern, or lack...

OK, thanks for the replies, they are helping. Please consider scenario #4: #4) A visual of this experiment's detector screen, and only that, is being streamed live via the interwebs. Those watching this live stream are provided no way in advance to know whether experimenter #1 (with ordinary...

Do I have the proper understanding of the following three double-slit experiment situations? #1 While a standard double-slit experiment is run via a Mach-Zehnder interferometer apparatus that completely lacks which-way detectors, can an ordinary human experimenter be present and watch that...