- #1
omephy
- 18
- 0
Srednicki eqn. (2.23) and (2.24) states: We can make this a little fancier by defining the unitary spacetime translation operator
[tex] T(a) \equiv \exp(-iP^\mu a_\mu/ \hbar) [/tex]
Then we have
[tex] T(a)^{-1} \phi(x) T(a) = \phi(x-a) [/tex]
How do we get the second equation from the first equation?
[tex] T(a) \equiv \exp(-iP^\mu a_\mu/ \hbar) [/tex]
Then we have
[tex] T(a)^{-1} \phi(x) T(a) = \phi(x-a) [/tex]
How do we get the second equation from the first equation?