Browse Hierarchy SPA7024P: Functional Methods in Quantum Field Theory

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The module will introduce Feynman's path integral formulation of Quantum Mechanics and apply it to the study of Quantum Field Theory (QFT). Emphasis will be given to the role of symmetries (Ward identities), the renormalisation group and the idea of effective action. The concept of Wilson's effective action and the different nature of (ir)relevant/marginal terms will be discussed. Simple scalar theories will provide the example where to apply the concepts and the techniques introduced. The course will also touch on some more advanced topics, such as quantum anomalies and conformal field theories.

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