Expand the core ideas of relativistic quantum field theory which have been introduced in Quantum Field Theory 1, specifically in what concerns analiticity, symmetry and invariance.
Expected learning outcomes
At the end of this course the student: 1. Will be able to use unitarity and the optical theorem to understand the analytic properties of amplitudes; 2. Derive the Ward identities for symmetres realized in Wigner-Weyl form; 3. Prove Glodstone's theorem for spontaneously broken symmetries, both at the classical and quantum level; 4. Construct and compute the effective potential; 5. Quantize a gauge theory and derive its Feynman rules with various gauge choices 6. Construct a gauge theory with massive field via the Higgs mechanism; 7. Renormalize quantum electrodymanics perturbatively; 8. Understand the quantum breaking of classical symmetries related to scale invariance (including chiral anomalies); 9. Write donw and solve the Callan-Symanzik equation (renormalization group equation); 10. Compute the operator-product (Wilson) expansion and the anomaloud dimensions of operators entering it.
Lesson period: First semester
(In case of multiple editions, please check the period, as it may vary)