Why do two particles hold themselves together in a vacuum?

  • Thread starter BrettS
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So, I've been wondering about this lately and wanted to know if anyone could provide me with a straightforward answer on what the theory behind this phenomenon currently is?
 

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  • #2
mathman
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You need to give more context. If they are charged, then the electromagnetic force comes into play. If they are nucleons, then (depending on details) the strong force will be applicable. If they are just pieces of dust, they probably won't stay together, except by coincidence.
 

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