Consider a 4 current
J^\mu and a metric g then conservation laws will require \del_\mu J^\mu = 0
my lecturer gave me a brief problem and I think I'm missing some understanding of it
he writes
What I'm not understanding is, where he states, if we choose B to be the time slice between etc...
There's a question in Schnutz - A first course in special relativity
Consider a Velocity Four Vector U , and the tensor P whose components are given by
Pμν = ημν + UμUν .
(a) Show that P is a projection operator that projects an arbitrary vector V into one orthogonal to U . That is, show that...
you, Orodruin are the man!
thanks for your help
it turns out that we get the same equation for energy equivalence and invariant mass
that makes ALOT more sense
i'm just crunching through the calculations now, I'll get back to you if i get the right answer, sorry one more question is that how do you know the pions are going at equal velocities?
oh okay... so if they have the same velocity... that makes a bit more sense...
OKAY I'm still confused about the energies. could i not just solve the equation by equating the energies?
Cheers\
Adam
Okay so i have a question for you guys
if I have a positron striking an electron at rest to create 2 pions( + and -) and I want to calculate the minimum kinnetic energy that the electrons can possesses to create these pions... then the created pions will be at rest correct?
so this gives me two...
yes, right, So I plug in x1=x2, so.. the limits of the integration don't matter? or.. the limits are from -a to pos a..
RIGHT any place in the well.. as long as they're together
Thanks that makes sense