Quantum Entanglement

[VnecksRule]

Would someone be able to help me understand quantum entanglement a little bit better? I understand that if particles come to close together that something strange happens and that they then start doing some of the same things, but what force drives this? What triggers the force and where does it come from? How far does it stretch? Things like this. Help please?

[StringJunky]

Here's a Wiki on it:

 

http://en.wikipedia.org/wiki/Quantum_entanglement

[1123581321]

QE is still not fully understood. Its a very weird force of quantum mechanics. Some call it the god force because of its such strange nature. When 2 particle like photons come together they seem to interact somehow in which information of both particles is shared and kept even over large distances. in fact distance doesn't seem to have any effect. This phenomenon gave rise to the famous EPR paradox and einstein called it 'spooky action at a distance'. Basically when the spin of particle is measured the other is instantaneously reduced to the complementary spin etc. One theory to explain the effect is the holographic universe theory, which for QE says that instead of dealing with relativistic paradoxes and so forth, both particles are actually the same thing (particle), whereby there is no actual 'objective' seperation - which stems from our 'observer' point of view, but intact at deeper or holographic level of reality, the particle is fundamentally the same. Therefore there is no need for 'instantaneous' information transfer because both are one. Like the a fish in a tank being look at from the point of view of 2 cameras without the knowledge of the technology (in such a situation) and seeing that when the fish moves its image from 2 different angles through the cameras moves (in different ways) instantaneously. therefore without the knowledge that what is thought to be too separate fish - from 2 different points of view - is just one fish from 2 different angles, paradoxes automatically arise. So in summary, no one knows. But another theory is that information (of the spin etc) is travelling backward in time - to the point where the particles are together. Somehow, excluding the holographic idea, information is exchanged via energy etc and some sort of link is maintained. Conscious processes cannot be ruled out - also a holographic idea.

[questionposter]

The best theory on why this happens so far is that when the particle's come close together in an isolated and undisturbed manner, their wave function's overlap and become combined so that the system is treated as a single particle-wave, and this is suspected to be caused by the particle's overlapping in the same 4th or 5th dimensional coordinates while moving in different 3 dimensional space coordinates.

[swansont]

The most common forms of entanglement involve the creation of particle pairs with one of their quantized parameters subject to a conservation law. Such as a spin-1 particle decaying into two spin-1/2 particles — if the original spin projection was zero, one of the new particles must be spin up and the other spin down so they add to zero — or photons with orthogonal polarizations, such as the ones created in parametric downconversion.

[questionposter]

The most common forms of entanglement involve the creation of particle pairs with one of their quantized parameters subject to a conservation law. Such as a spin-1 particle decaying into two spin-1/2 particles — if the original spin projection was zero, one of the new particles must be spin up and the other spin down so they add to zero — or photons with orthogonal polarizations, such as the ones created in parametric downconversion.

 

Ok, I don't even know much about the methematics about spin and that's exactly what I thought would happen, there has to be something classical about this whole spin thing, or there has to at least be something physical about it.

[swansont]

Ok, I don't even know much about the methematics about spin and that's exactly what I thought would happen, there has to be something classical about this whole spin thing, or there has to at least be something physical about it.

No, not really. Intrinsic angular momentum is a quantum effect.

[1123581321]

Ok, in-fact i've never considered the interaction of the wave functions for QE. Thats a really interesting idea. Of course though, it makes sense in terms of the particles becoming overlapped in hyperspace while remaining separate from our limited point of view. Because their probability functions would overlap and become entangled rendering their potentials and hence characteristics - onced measured/observed - mutually shared in a way.

[questionposter]

No, not really. Intrinsic angular momentum is a quantum effect.

 

Ok, spin in classical terms is an object rotating. How does an electron act? It acts like other things, but ALSO like that. I think it's semi-classical because it's not just a wave, it's also a particle, so I think it is spinning, it's just not in completely the same way we'd expect or the cause for it is different, I don't see any other way to get a rotating magnetic field.

Edited September 23, 2011 by questionposter

[swansont]

Ok, spin in classical terms is an object rotating. How does an electron act? It acts like other things, but ALSO like that. I think it's semi-classical because it's not just a wave, it's also a particle, so I think it is spinning, it's just not in completely the same way we'd expect or the cause for it is different, I don't see any other way to get a rotating magnetic field.

If you try and model the electron as a rotating sphere you must have a surface speed which exceeds c.

 

Here's a recent discussion of spin

http://www.scienceforums.net/topic/52810-spin/

[questionposter]

If you try and model the electron as a rotating sphere you must have a surface speed which exceeds c.

 

Here's a recent discussion of spin

http://www.sciencefo...pic/52810-spin/

 

It still seems like an electron is doing something similar to spinning, like it has angular momentum. Perhaps spin is just the pattern at which an electron waves at or appears.

[swansont]

It still seems like an electron is doing something similar to spinning, like it has angular momentum. Perhaps spin is just the pattern at which an electron waves at or appears.

 

It does have angular momentum. But it is not due to physical spinning, such as you see with a top.

[questionposter]

It does have angular momentum. But it is not due to physical spinning, such as you see with a top.

 

Well it just seems like something is missing. So if the electron was spinning, would it be accelerating just if it was spinning in a way that it would have to radiate its energy awayor not?

[graviton]

particals wink in and out of space time, maybe there is a dimension in which they pass where distance does not matter where information can be exchanged, that what we think were seeing is distance when they are in our space time but if they wink in and out of space time they may be right next to each other some place else for a finite period of time, super string theory suggest 11 dimensions, is it logical to think that a compressed dimension exists benieth our own similar to subspace or hyperspace?

 

So say a partical has a counterpart and seemingly what happens to one happens to the other even if it's on the other side of the galaxie, possibly if they wink in and out of space time they meet up somewhere together in another dimension where this informaton is exchanged, maybe another point towards M theorie.

 

according two the double slit experiment it is a probabilitie field until observed acting as a wave and partical, this suggests it has the abilitie to change if acted apon by conscious observation, otherwise it is is a probabilitie field that may have some level of programming not unlike genes in genetics.

 

particals wink in and out of space time, maybe there is a dimension in which they pass where distance does not matter where information can be exchanged, that what we think were seeing is distance when they are in our space time but if they wink in and out of space time they may be right next to each other some place else for a finite period of time, super string theory suggest 11 dimensions, is it logical to think that a compressed dimension exists benieth our own similar to subspace or hyperspace?

 

So say a partical has a counterpart and seemingly what happens to one happens to the other even if it's on the other side of the galaxie, possibly if they wink in and out of space time they meet up somewhere together in another dimension where this informaton is exchanged, maybe another point towards M theorie.

 

according two the double slit experiment it is a probabilitie field until observed acting as a wave and partical, this suggests it has the abilitie to change if acted apon by conscious observation, otherwise it is is a probabilitie field that may have some level of programming not unlike genes in genetics, the real question is how does it know it is being observed.

 

Ok, in-fact i've never considered the interaction of the wave functions for QE. Thats a really interesting idea. Of course though, it makes sense in terms of the particles becoming overlapped in hyperspace while remaining separate from our limited point of view. Because their probability functions would overlap and become entangled rendering their potentials and hence characteristics - onced measured/observed - mutually shared in a way.

 

I agree, somehow they are meeting up and is not impossible to think they are doing this on some other level of reality we can not see into, that they may overlap in some sort of compressed dimension, science states that the universe is ful of holes, imagine a sponge, the material part being matter and the air pockets being dark matter and possibly another layer of compressed space time, if the compresson rate is is high enough the distance between the entagled particals maybe be so small they can overlap.

 

QE is still not fully understood. Its a very weird force of quantum mechanics. Some call it the god force because of its such strange nature. When 2 particle like photons come together they seem to interact somehow in which information of both particles is shared and kept even over large distances. in fact distance doesn't seem to have any effect. This phenomenon gave rise to the famous EPR paradox and einstein called it 'spooky action at a distance'. Basically when the spin of particle is measured the other is instantaneously reduced to the complementary spin etc. One theory to explain the effect is the holographic universe theory, which for QE says that instead of dealing with relativistic paradoxes and so forth, both particles are actually the same thing (particle), whereby there is no actual 'objective' seperation - which stems from our 'observer' point of view, but intact at deeper or holographic level of reality, the particle is fundamentally the same. Therefore there is no need for 'instantaneous' information transfer because both are one. Like the a fish in a tank being look at from the point of view of 2 cameras without the knowledge of the technology (in such a situation) and seeing that when the fish moves its image from 2 different angles through the cameras moves (in different ways) instantaneously. therefore without the knowledge that what is thought to be too separate fish - from 2 different points of view - is just one fish from 2 different angles, paradoxes automatically arise. So in summary, no one knows. But another theory is that information (of the spin etc) is travelling backward in time - to the point where the particles are together. Somehow, excluding the holographic idea, information is exchanged via energy etc and some sort of link is maintained. Conscious processes cannot be ruled out - also a holographic idea.

 

the particals are actually one thing linked by quantum entanglement, that no matter how far apart they are they occupy the same space in space time, what happens to one happens to the other according to m theorie paralelle universes can exist by an atom existing in multiple space times, could this be because the atom is entangled with other time space dimentions.

 

if so then maybe the particals are entangled by space time in a similar way.

 

more simplistic model, we take a partical split into two particals with the same space time, we tie a tangled up string of space time to the partical at both ends, one partical at each end, both particals are connected by the same space time making it the smae exact partical, so in effect it is like watching the partical in a mirror, it being the same partical connected by the same space time, even though the space time in between is entangled it still reacts as if both particals are still one which it is, even though it is existing in space time connected on a quantum level..

 

 

Edited October 5, 2011 by graviton