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Faster than light travel or "jumping"
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<blockquote data-quote="tomBitonti" data-source="post: 2278761" data-attributes="member: 13107"><p><strong>Don't think that quantum tunnelling gets you > c</strong></p><p></p><p>Hi,</p><p></p><p>Slight hijack.</p><p></p><p>(IMHO), I don't think that you can use quantum tunnelling effects to move</p><p>information/energy/mass faster than the speed of light, at least as far as</p><p>is currently known. Using that for faster than light travel is still magic.</p><p></p><p>In the case of coupled events, there is an apparent exchange of information</p><p>between the events that would seem to travel faster than light, but, once you</p><p>factor in the time taken to move the coupled particles, you lose the apparent</p><p>gain. (Seems to me as if the particles 'lazily evaluated' their final state, but</p><p>with consistency with the state having been evaluated earlier on, with the</p><p>caveat that interference still occurs, which means the evaluation can't have</p><p>happened until the particles were apart. It ... seems ... that information has to</p><p>travel faster than light, but only in a way that cannot be used to physically</p><p>transfer information faster than the speed of light.)</p><p></p><p>Most non-technical writings on quantum effects aren't really going to tell what</p><p>is happening. Too many analogies with everyday experience, which cannot</p><p>work. Best to go read Feynman's third series of lectures.</p></blockquote><p></p>
[QUOTE="tomBitonti, post: 2278761, member: 13107"] [b]Don't think that quantum tunnelling gets you > c[/b] Hi, Slight hijack. (IMHO), I don't think that you can use quantum tunnelling effects to move information/energy/mass faster than the speed of light, at least as far as is currently known. Using that for faster than light travel is still magic. In the case of coupled events, there is an apparent exchange of information between the events that would seem to travel faster than light, but, once you factor in the time taken to move the coupled particles, you lose the apparent gain. (Seems to me as if the particles 'lazily evaluated' their final state, but with consistency with the state having been evaluated earlier on, with the caveat that interference still occurs, which means the evaluation can't have happened until the particles were apart. It ... seems ... that information has to travel faster than light, but only in a way that cannot be used to physically transfer information faster than the speed of light.) Most non-technical writings on quantum effects aren't really going to tell what is happening. Too many analogies with everyday experience, which cannot work. Best to go read Feynman's third series of lectures. [/QUOTE]
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