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| Tags: electromagnetic, force, photons, virtual |
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#1
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Starblade Darksquall wrote:
I'm just wondering about a few things involving the electromagnetic force. First off, it's said that bosons with spin 1 mediate repulsive forces and bosons with spin 2 mediate attractive forces. A photon is spin 1. So, how does it mediate attractive forces? Or do they mean that like-charged particles will become repulsive for spin 1 bosons and attractive for spin 2 bosons and unlike-charged particles will become attractive for spin 1 bosons and repulsive for spin 2 bosons? Bosons are integer-spin particles which mediate forces between fermions. Odd spin bosons mediate repulsive forces; even spin bosons mediate attractive forces. Bosons of the same type are indistinguishable and have symmetric wavefunctions. Bosons obey Bose-Einstein statistics. Bose-Einstein Statistics http://scienceworld.wolfram.com/phys...tatistics.html |
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#2
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Sam Wormley wrote in message ...
Starblade Darksquall wrote: I'm just wondering about a few things involving the electromagnetic force. First off, it's said that bosons with spin 1 mediate repulsive forces and bosons with spin 2 mediate attractive forces. A photon is spin 1. So, how does it mediate attractive forces? Or do they mean that like-charged particles will become repulsive for spin 1 bosons and attractive for spin 2 bosons and unlike-charged particles will become attractive for spin 1 bosons and repulsive for spin 2 bosons? Bosons are integer-spin particles which mediate forces between fermions. Odd spin bosons mediate repulsive forces; even spin bosons mediate attractive forces. Bosons of the same type are indistinguishable and have symmetric wavefunctions. Bosons obey Bose-Einstein statistics. Bose-Einstein Statistics http://scienceworld.wolfram.com/phys...tatistics.html This tells us nothing, except maybe that the thing mediating the attractive force between electrons and protons is actually a boson, and not the virtual photon, since the photon is spin 1. |
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#3
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Sam Wormley wrote:
Starblade Darksquall wrote: I'm just wondering about a few things involving the electromagnetic force. First off, it's said that bosons with spin 1 mediate repulsive forces and bosons with spin 2 mediate attractive forces. A photon is spin 1. So, how does it mediate attractive forces? Or do they mean that like-charged particles will become repulsive for spin 1 bosons and attractive for spin 2 bosons and unlike-charged particles will become attractive for spin 1 bosons and repulsive for spin 2 bosons? Bosons are integer-spin particles which mediate forces between fermions. Odd spin bosons mediate repulsive forces; even spin bosons mediate attractive forces. Bosons of the same type are indistinguishable and have symmetric wavefunctions. Bosons obey Bose-Einstein statistics. Bose-Einstein Statistics http://scienceworld.wolfram.com/phys...tatistics.html With all due respect to Wolfram, this is not quite accurate. Spin-1 bosons mediate forces which can be attractive OR repulsive, like E&M. Spin-2 bosons are needed to mediate forces which are *only* attractive, like gravity. You might be able to use a spin-2 boson to get a force which is always repulsive, but it's been a while since I've studied this stuff. -Eric |
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