- #1
vaibhavtewari
- 65
- 0
Hello everyone,
I will be glad if someone can explain how equation 7.7
[tex]\tilde{x}(E)[/tex] = [tex]\tilde{q}(E)[/tex] + [tex]\frac{\tilde{f}(E)}{E^2-\omega^2+i\epsilon}[/tex]
is a shift by constant, heres the link for the book
http://www.physics.ucsb.edu/~mark/ms-qft-DRAFT.pdf
thanks
I will be glad if someone can explain how equation 7.7
[tex]\tilde{x}(E)[/tex] = [tex]\tilde{q}(E)[/tex] + [tex]\frac{\tilde{f}(E)}{E^2-\omega^2+i\epsilon}[/tex]
is a shift by constant, heres the link for the book
http://www.physics.ucsb.edu/~mark/ms-qft-DRAFT.pdf
thanks