Large gauge transformation
Topologically nontrivial gauge transformations
Given a topological space M, a topological group G and a principal G-bundle over M, a global section of that principal bundle is a gauge fixing and the process of replacing one section by another is a gauge transformation. If a gauge transformation isn't homotopic to the identity, it is called a large gauge transformation.
In theoretical physics, M often is a manifold and G is a Lie group.
See also
- Large diffeomorphism
- Global anomaly
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