Hi Jane;

According to Raymond Chow, Luca is right, but Gunter Nimtz doesn't agree he believes he has already sent information at over 300 times c using quantum tunneling. Saw a doc on it.

Check the works of Miguel Alcubiere. Space itself has no limit on how fast it can be expanded or contracted, that is the basis of his super luminar travel.

Also as far as I understand and that is not much what Einstein called spooky action at a distance, (one of his attempts to find a contradiction in quantum mechanics) travels faster than c (it is instantaneous, thus the contradiction).

Last edited by bobbym (2009-08-25 12:36:32)

Hi Jane;

I am having a problem working through your idea. It is very possible that I am in error. I am getting the limit ds/dt as θ->0 as  - ∞ rather than ∞. What I am doing wrong? Does that change anything if it is - ∞? Can the rate change of the distance with respect to time be negative?

Last edited by bobbym (2009-08-26 01:35:15)

Hi luca-deltodesco;

First, I am not a physicist, so feel free to reject any of this.

I think Everett with his "many world theory" cleared this up. It comes from Einstein, who hated quantum mechanics. He posed this thought experiment as a bust to quantum mechanics. If a particle and its anti-particle were at opposite ends of the universe and I changed the spin or charge of the first particle then instantaneously the other particle would adopt the reverse spin or charge, otherwise the law of conservation of charge and spin are not true. Since Einstein argued that info can't travel faster than light he believed this could not happen.

A lab experiment was done and the change of the second particle was observed, thus destroying Einsteins last attack on quantum mechanics. Saw it on a documentary but can't remember the name of the documentary.

About information, as I said Raymond Chow and Gunter Nimtz are arguing that very point. Since neither had a clear understanding of what the definition of information is they could not agree. (same documentary).

Last edited by bobbym (2009-08-26 02:40:27)

bobbym wrote:

Hi Jane;

I am having a problem working through your idea. It is very possible that I am in error. I am getting the limit ds/dt as θ->0 as  - ∞ rather than ∞. What I am doing wrong? Does that change anything if it is - ∞? Can the rate change of the distance with respect to time be negative?

JaneFairfax wrote:

But like i said, information cannot be transferred, because you cannot control what the spin on your particle is when it is observed, all you know is that the other particle must have the opposite.

You're saying it's not information because you can't change it?

It existed when the particles were first created, it just wasn't measured.

This is one of the hardest things to understand (or perhaps, simply become accustomed to) in quantum physics.  The thing is that it didn't exist when the particles were created.  There are several states (spins) a particle can have, and we can express the probability that a certain particle is in a certain state, called the wave-function.  When the state is actually measured, we know with certainty which state the particle is in, and the wave-function is said to "collapse".

All this is perfectly fine, except for one thing.  Scientists currently think (and experiments have given them good reason to) that the wave-function is not just based on our incomplete knowledge, but the "probability aspect" is actually a physical phenomenon.