Quantum Field Theory: Loop Corrections and Counter Terms

Description

This lecture delves into the intricacies of loop corrections and counter terms in quantum field theory. The instructor explains how divergences arise in loop calculations, leading to the need for counter terms to renormalize the theory. By analyzing various integrals and diagrams, the lecture demonstrates how to handle divergences and extract meaningful predictions from loop calculations. The normalization group is highlighted as a powerful tool to determine higher-order corrections based on lower-order results, ensuring consistency and predictability in quantum field theory.

Official source

https://mediaspace.epfl.ch/media/0_kpgj6z3t

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2 (two) is a number, numeral and digit. It is the natural number following 1 and preceding 3. It is the smallest and only even prime number. Because it forms the basis of a duality, it has religious and spiritual significance in many cultures. The digit used in the modern Western world to represent the number 2 traces its roots back to the Indic Brahmic script, where "2" was written as two horizontal lines. The modern Chinese and Japanese languages (and Korean Hanja) still use this method.

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