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johani
  • Member for 5 years, 10 months
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4 votes
1 answer
3k views

Do $\gamma$ matrices commute with the Dirac spinor field?

4 votes
2 answers
3k views

Energy-momentum tensor of transformed Dirac Lagrangian

4 votes
2 answers
484 views

Simplify quantum electrodynamics expression

2 votes
1 answer
238 views

Why can we predict any experimental outcome, given a probability density over quantum states?

2 votes
1 answer
727 views

How to compute amplitudes when Feynman diagrams have loops

2 votes
1 answer
1k views

Charge conjugation transformation of complex scalar field

1 vote
1 answer
729 views

Breaking of a commutator involving Dirac spinors and gamma matrices

1 vote
2 answers
229 views

Trying to check current conservation under symmetry transformation

0 votes
1 answer
67 views

Frequencies associated with boson/fermion operators

0 votes
1 answer
777 views

Translational invariance and the derivation of the energy-momentum tensor