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by Ciro Santilli (@cirosantilli, 25)
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Electromagnetic four-potential

 wiki
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A different and more elegant way to express Maxwell's equations by using the:
  • magnetic vector potential
  • electric potential
instead of the:
  • magnetic field
  • electric field
  •  Table of contents
    • Electromagnetic tensor link
    • Four-current link
    • Lorentz gauge condition link
      • Coulomb gauge link Lorentz gauge condition
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Electromagnetic tensor (Fμν)

 Electromagnetic four-potential toc wiki
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Four-current

 Electromagnetic four-potential toc wiki
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Lorentz gauge condition

 Electromagnetic four-potential toc wiki
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There are several choices of electromagnetic four-potential that lead to the same physics.
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E.g. thinking about the electric potential alone, you could set the zero anywhere, and everything would remain be the same.
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The Lorentz gauge is just one such choice. It is however a very popular one, because it is also manifestly Lorentz invariant.
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Coulomb gauge

 Lorentz gauge condition toc wiki
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Alternative to the Lorentz gauge, but less used in general as it is not as nice for relativity invariance.

 Ancestors

  1. Maxwell's equations
  2. Electromagnetism
  3. Particle physics
  4. Physics
  5. Natural science
  6. Science
  7. Index

 Incoming links

  • Derivation of the quantum electrodynamics Lagrangian
  • Lorentz gauge condition

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