New posts in Gauge Invariance

Physical difference between gauge symmetries and global symmetries

Why can't a real scalar couple to the electromagnetic field?

Diffeomorphism group vs. $GL(4,\mathbb{R})$ in General Relativity

What will happen if the photon has non-zero mass?

Wess-Zumino Gauge in non-Abelian supersymmetric theory

Showing that Coulomb and Lorenz Gauges are indeed valid Gauge Transformations?

When can we add a total time derivative of $f(q, \dot{q}, t)$ to a Lagrangian?

When can a global symmetry be gauged?

Noether theorem, gauge symmetry and conservation of charge

Why is the "canonical momentum" for the Dirac equation not defined in terms of the "gauge covariant derivative"?