QFT: A Compelling Journey III - Projective Representations and half-integer spin.
Автор: MealSizePhysics
Загружено: 2020-10-06
Просмотров: 1512
In this video we learn about projective representations, and how they explain the true relationship between SO(3) and SU(2). We then see how this can be used to describe particles with half-integer spin.
References:
For most of this series, the information comes from 3 books:
[1] The Quantum Theory of Fields Vol 1 - Steven Weinberg
[2] QFT & The Standard Model - Schwartz
[3] An Introduction to Quantum Field Theory - Peskin & Schroeder
For an explanation of projective representations and passing to the universal cover consult chapter 2, and appendix B of [1]. For an accessible introduction to topology and homotopy theory a good resource is:
[4] Geometry, Topology and Physics - Nakahara
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