/sci/ - Science & Math

How does the top electron know the other electron is there before the photon is released?

>>7955035
A lot of different results are possible.

One of the more basic ones is your typical [math]{e^ - }{e^ - } \to {e^ + }{e^ + }[/math]


The amplitude would look something like this:
[math] {A^{aba'b'}}\left( {p,k,q,p',k'} \right) = \psi _p^a\left( { - ie{\gamma ^\mu }} \right)\psi _k^b\left( {\frac{{ - i{\eta _{\mu \nu }}}}{{{q^2} + i0}}} \right){{\bar \psi }^{a'}}_{p'}\left( { - ie{\gamma ^\nu }} \right){{\bar \psi }^{b'}}_{k'} [/math]

(a,b,a',b' being spinor indicies)
(p,k,p',k' denoting the momentum of each particle)

>>7202451
this diagram is better

these are for free e- and e+ floating around, not for the e- who live in an atom