Talk:Gauge fixing

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Would not a more accurate nomenclature be (divA = 0) for the Coulomb gauge and (divA = 0 together with scalar potential = 0) for the radiation gauge? The radiation gauge, which is used in perturbative calculations, is just the Coulomb gauge in the absence of charge and describes the free electromagnetic field. The Coulomb gauge, in the presence of charge and accordingly with non-zero scalar potential, is used in quantum chemistry. Xxanthippe 09:28, 19 June 2006 (UTC)[reply]

Good reference for gauge-fixing in context of Maxwell's equations.

Hi, I think this reference does a good job in explaining the concepts, at least for maxwell's equations. http://www.mathematik.tu-darmstadt.de/~bruhn/Maxwell-Theory.html

Questions for introduction paragraph

What is meant by "redundant degree of freedom"

What is an "equivalence class"

What is "configuration space"

What calculations do gauge fixing simplify? What calculations don't gauge fixing simplify?

And if you could settle an argument for me, is gauge fixing compatible with the Lorentz Transformations?