Affine Space of Connections and Why the Gauge Group Must Be Inhomogeneous
Connections don't form a vector space, and that single fact quietly forces a bigger symmetry.
Connections don't form a vector space, and that single fact quietly forces a bigger symmetry.
Once you admit translations in connection space, you're forced into a semidirect product — and it acts on connections in one line.
Choosing an affine origin (without adding structure) so transport becomes well-defined.
The transport displacement that actually transforms like a field.
Two bad transformation laws, one good variable.