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Natural Science Forum / Physics / Particle Physics / February 2005Virtual particles
Who knows how virtual particles meet to annihilate? After spawning from vacuum they might end up anywhere yet they always manage to annihilate (to conserve vacuum's zero-sum energy state). It seems that probability wave can collapse leaving particles anywhere, what brings them together? What would be a simple [visual] explanation? Thanks, -Alex | Who knows how virtual particles meet to annihilate? | After spawning from vacuum they might end up anywhere yet they always | manage to annihilate (to conserve vacuum's zero-sum energy state). | It seems that probability wave can collapse leaving particles anywhere, | what brings them together? | What would be a simple [visual] explanation? IMHO, a possible solution is that spacetime has to be defined by a mechanism (quantum) that keeps them constrained. You can see a visual at the following link. http://vacuum-physics.com/QVC/quantum_vacuum_charge.pdf or postscript http://vacuum-physics.com/QVC/quantum_vacuum_charge.ps FrediFizzx If particle A and B are spontaneously created out of the vacuum they are not required to destroy each other. Lets say A is the particle and B is the anti-particle. A and B spring into existence B could meet up with C and those two could destroy each other. This leaves A to roam free. C and A are the same type of particle. This still conserves vacuum energy. As far as I know A and B spawn almost on top of each other then destroy each other a little ways off or at the same spot. Again as far as I know A and B would not be created half way across the universe from each other. While this my be possible, it would be highly unlikely. They usually destroy each other because one is a particle and the other is an antiparticle. Meaning that they have equal and opposite charge. So they attract through the electric field. | If particle A and B are spontaneously created out of the vacuum they | are not required to destroy each other. Lets say A is the particle and | B is the anti-particle. A and B spring into existence B could meet up | with C and those two could destroy each other. This leaves A to roam | free. C and A are the same type of particle. This still conserves | vacuum energy. In fact, you can apply this to real elementary fermions also. A real electron can swap with a virtual electron. Who is going to know or be able to tell the difference? | As far as I know A and B spawn almost on top of each other then destroy | each other a little ways off or at the same spot. | | Again as far as I know A and B would not be created half way across the | universe from each other. While this my be possible, it would be | highly unlikely. The probability definitely approaches zero. | They usually destroy each other because one is a particle and the other | is an antiparticle. Meaning that they have equal and opposite charge. | So they attract through the electric field. Yep. They don't get too far away from each other most of the time unless there is some kind of external help. FrediFizzx Electric field shouldn't be at play here. Strong external magnetic field can separate particles before they annihilate and what do we get? Violation of energy conservation. Close proximity also kind of weak argument. Virtual particles are behind Casimir effect which can be observed on a macro scale. This means virtual particles live long enough (but no more than Plank's time) to travel macro distances before annihilation. Chances that both particles of the pair will be in close proximity after that are really small. I'm not saying I know the answer, I'm saying that both electric field and close proximity don't feel like real mechanisms behind pair annihilation. -Alex Electric field shouldn't be at play here. Strong external magnetic field can separate particles before they annihilate and what do we get? Violation of energy conservation. Close proximity also kind of weak argument. Virtual particles are behind Casimir effect which can be observed on a macro scale. This means virtual particles live long enough (but no more than Plank's time) to travel macro distances before annihilation. Chances that both particles of the pair will be in close proximity after that are really small. I'm not saying I know the answer, I'm saying that both electric field and close proximity don't feel like real mechanisms behind pair annihilation. -Alex |
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