Notes
for Physics 624 (Prof. Agashe) – Fall 2010

1.
Lagrangian formalism: going from single particle to field
(from Sakurai)

2 Weinberg’s paper on his approach towards (teaching of) QFT

2. Derivation
of Dirac equation: part
(i) and part
(ii)

3. Spin
of single particle and single anti-particle states

5.
S-matrix
element for Fermion-fermion scattering (a couple
of typos on page 4 have

been
corrected)

6. Generalities
of cross-section and example with 4-fermion interaction

7. QED
cross-section: e+ e- -> mu+ mu-

8. Scalar
QED