Lorenz gauge condition

Gauge fixing of electro magnetic potential

In electromagnetism, the Lorenz gauge condition or Lorenz gauge (after Ludvig Lorenz) is a partial gauge fixing of the electromagnetic vector potential by requiring ⁠ ∂ μ A μ = 0 {\displaystyle \partial _{\mu }A^{\mu }=0} ⁠. The name is frequently confused with Hendrik Lorentz, who has given his name to many concepts in this field. The condition is Lorentz invariant.

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