Quantum Theory

I am entering this forum, as well as others, to suggest a path on Enstein's "Unified Theory" (it seems a pretense, but it is not). I am Brazilian and have a Shiatsu technical course. Reading the Unified Theory, I thought: what if the Universe were like the Chinese symbol of Yin / Yang? Calculations I leave to you, but think / have ideas .... oh, I have that and a lot! There is no reason for competition between "Relativity" and "Quantum Mechanics". The Force / Energy of One is contained in the other. As in the Yin / Yang symbol. Even when the black part contains the white with a speck and vice versa. There is no stronger or weaker. The two Forces / Energies are exactly the…

I am a retired Prof in Molecular Biology but I have a long standing interest as an outsider in Physics and Astronomy. I read recently about Quantum Trajectory Theory and a new experimental result in that field by Markus Hennrich and Adan Cabello , which I don't really understand. They measured electrically trapped strontium ions in superposition. They saw a smooth, gradual change in state rather than the abrupt snap of the predicted collapsing wave function. The review I read said that this went against the "many world" hypothesis. Could someone explain this to me? Thanks. Larry

Hi, I know the very basics of quantum physics and yet I need to ask this silly quesiton. Can there be an alternative form of electricity than revolves around the movement of positrons? Have I just asked the most stupid question in this forum? If it's possible, will anything be different with the electricity? If it's not possible then is it still possible for electricity to exist without electrons? Keep in mind that I can't stress how little I know of quantum physics, I only understand the very, very basic ideas and equations from it.

Is there any particular reason why entropy cannot be considered to be a measure of or proxy for the level of competition in a system? Take a system of agents that can compete or cooperate, whether human, biological, molecular or atomic. Allow the agents to compete for energy (or sugar or money). The state of maximum entropy and the state of maximum competition achieve the same effect - maximum dispersion of the energy or sugar or money throughout all the agents in the system. Ergo, can entropy be considered to be a measure of or proxy for the level of competition in the system?

This is a pretty big deal. This is because most of the confusion around the "weirdness" of Quantum Mechanics comes down to the interpretation of the wave function. Now we have evidence. This isn't speculation about the wave function but the results of experiments. First, let me lay out the evidence. The wave-function is real but nonphysical: A view from counterfactual quantum cryptography https://arxiv.org/abs/1311.7127 Here's a test that also showed this. Direct counterfactual communication via quantum Zeno effect Significance Abstract https://www.pnas.org/content/early/2017/04/19/1614560114 This clearly changes everythin…

There are generally two basic ways to solve physics models: 1) Asymmetric, e.g. Euler-Lagrange equation in CM, Schrödinger equation in QM 2) Symmetric, e.g. the least action principle in CM, Feynman path integrals in QM, Feynman diagrams in QFT. Having solution found with 1) or 2), we can transform it into the second, but generally solutions originally found using 1) or 2) seem to have a bit different properties - for example regarding "hidden variables" in Bell theorem. The asymmetric ones 1) like Schrödinger equation usually satisfy assumptions used to derive Bell inequality, which is violated by physics - what is seen as contradiction of local realisti…

In quantum physics are quarks particles? Because the mass subsists. Where then would mass be produced by a wave complex only? Just to knwo if it's always an eternal question to choose between wave or particle. Or both? I recall that it is to explain the mass at the quantum levels, namely the quarks. We are still talking about Wave–particle duality for the mass?

It is when the player (or game character) looks at something. The GPU then instantly responds by loading the object / surroundings in question. Well, if we assume that reality is virtual, there is nothing counter intuitive about the observer effect. It's actually the only scenario in which it makes perfect sense. I guess it's all about how the evidence is interpreted. To me the collapse of the wave function is valid evidence of a virtual universe, just like Brownian motion is evidence of molecules. I should also mention that I used "commonsense reasoning" as a pun, because it is a strong AI term 😁

Hello, I did not find any follow up on the research being carried out in this article. This seems like it would be a huge break through with quantum entanglement. There could be several reasons these experiments did not continue, such as diverting funds to other areas of research. Hopefully some one knows something because I would like to find out more about this research. JoeL https://www.livescience.com/50280-record-3000-atoms-entangled.html Quantum Record! 3,000 Atoms Entangled in Bizarre State By Charles Q. Choi March 27, 2015 …

Can an electron have the property of position via center of charge and/or center of mass?

What electronic property of an atom or molecule determines whether it will be transparent to some wavelength? Is it the outer electronic configuration, which orbital the outer electrons reside in, whether there is a specific pair/combination there, or something else? Mods: Move it if it's in the wrong place. E2A: To rephrase: What is it about the outer electron configuration that causes transparency to a/some wavelength/s?

The best would be for 0.02eV<Eg<0.07eV And if it would be cheap

Hello, I was thinking of wave-form collapse and how this is the result of interactions of particles (? in case particles isn't correct, interactions of things). A proton consists of 3 quarks that 'undergo' colour changing. This is mediated by gluons. As this is part of/result of strong interactions, I presume we can consider colour change an interaction. Why do these interactions not result in every proton always being measured. I suppose that wave-form collapse may not be a Yes or No thing, but that such small 'interactions' only lead to reduction(?) of the total wave-function. (I have no idea, I could and probably am wrong, but feel that I should at least att…

Hi, I often wonder about "dimensions"? You could say we live in a "3D" world - but in reality, isn't that just a "volume"? Does it even make any "realistic" sense to talk about anything less than "3D", or anything more? Theoretical physicists & mathematicians talk about "zero-dimensional points", but something without any "size" cannot even be said to be a "thing", surely? Likewise for a "one-dimensional" line, or a "two-dimensional" plane - there is no "breadth", so it can't really exist outside of a mathematician's imagination? Likewise for higher dimensions, say 5, or 11, etc - isn't this nonsensical? Is discussion of "dimensions" simply playful mathematics? In rea…

Hi, new here! 😀 I'm not "getting" the idea of entanglement? I read an analogy online - you buy a pair of shoes, take the box home & open it, only to find just one shoe in the box. By implication, the other shoe is still back at the store, and will be the other "foot" to what you have at home. Although just an analogy, I don't see how that's any different to two entangled photons, which by their very "entanglement" have oppositive polarities. No "locality" or "realism" is being violated, surely? The photons could be at opposite ends of the universe, but when we check one's polarity, we KNOW the other one will be the opposite! Where is the problem? Where's the "qua…

can two particles be entangled without having been created together, or ever having been approximate?

Quantum mechanics is equivalent with Feynman path ensemble, which after Wick rotation becomes Boltzmann path ensemble, which can be normalized into stochastic process as maximal entropy random walk MERW. But Boltzmann path ensemble has also spatial realization: 1D Ising model and its generalizations: Boltzmann distribution among spatial sequences of spins or some more complicated objects. For E_uv energy of interaction between u and v neighboring spins or something more general, define M_uv = exp(-beta E_uv) as transition matrix and find its dominant eigenvalue/vector: M psi = lambda psi for maximal |lambda|. Now it is easy to find (e.g. derived here) that proba…

Can photons or other particles form a wave-function again after an "observation" or "measurement" and what determines when or how that happens. So for example, we attempt the double slit experiment, where we have a measurement device at/before the slits, and have thus collapsed the wave-function, leading to 2 lines and not an interference pattern. So if we put the screen further away, then add new splits, would we at some see an interference pattern again? I hope that my question itself is clear, in case there are technical reasons why my above experiment wouldn't work. Thanks!

What is the medium that the wave function oscillates in?

1+1+1+1+1-1-1-1-1-1 without adding = symbol to it

New quantum study in an double-slit experiment.. https://futurism.com/the-geometric-structure-that-is-changing-notions-of-reality The quantum study is saying how strange quantum world is it like. example you have coin in a box it can be heads or tails. The double slit experiment saying for the person out side the box it can be both heads and tails but in the box it is heads or tails not both!! The best theory with out getting into many world theory is the wave theory that by measuring it or looking at it does some to the wave . The wave is in all position points but by looking at it or measuring it the wave breaks down to point.

Hello... Say there is a particle in a 1D box. The particle is in certain state. I know its position-space wave function. I can compute expectation value of its momentum by sandwiching the momentum operator between psi* and psi and integrating over the whole box width (or over whole infinity). Question... If I don't integrate over the whole box, but only over a part of the box, can the result be interpreted as follows: if I simultaneously measure momentum and position of identically prepared setups, and if I only consider those cases where a particle was found within the part of the box for which I computed the integral, then the average momentum of those particl…

Not sure if this is in the right topic of Quantum Theory. But what is the closest thing to true randomness? As I understand, computer generated numbers are deterministic at the core; dice do not have even mass distribution; hidden variable theory suggests there is an underlying deterministic function to the probabilistic nature of the quantum world. On the other hand, if there is no determinism in quantum probabilities, can true randomness be attained therein?

I don’t understand interference. Do you? First, some background. It was found, empirically, that when we send a certain kind of stuff (“particles,” such as photons or electrons) through a very narrow slit in a plane, and we detect them on a screen that is parallel to and far away from the plane, we find that individual particles are detected, and if we detect enough of them, their distribution forms what is called the Fraunhofer diffraction approximation: …

I don't think waves are in a duality when superposition, entanglement, and tunneling occur.