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Section 1.4 Global vs. Local (Gauge) Symmetry
202608010001 |
global symmetry local (gauge) symmetry Noether's theorem variations generators
Table 1.4.1. Global vs. Local (Gauge) Symmetry
| Symmetry range |
|
Different shift at every point
|
| Generator action |
Translates states through space and time
|
Rotates internal phases locally
|
| Variational result |
Yields a conserved quantity (e.g., momentum and energy)
|
Yields a physical force field (e.g., electromagnetism and gluons)
|
