Gauge fixing

In the physics of gauge theories, gauge fixing (also called choosing a gauge) denotes the act of removing redundant field variables. There is an enormous amount of freedom involved in the choice of which variables to remove. Judicious gauge fixing can simplify problems immensely. However, this procedure removes manifest gauge symmetry. As a result, one needs to check the gauge invariance of every result obtained using a specific gauge fixing. Gauge transformations are the acts of going from one gauge fixing to another.

Related Topics:
Physics - Gauge theories - Field - Gauge symmetry - Gauge invariance

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