(a) Construct a tensor Dμν (analogous to Fμν) out of D and H. Use it to express Maxwell’s equations inside matter in terms of the free current density J μ f .
(b) Construct the dual tensor Hμν (analogous to Gμν).
(c) Minkowski proposed the relativistic constitutive relations for linear media:
Where is the proper30 permittivity, μ is the proper permeability, and ημ is the 4-velocity of the material. Show that Minkowski’s formulas reproduce Eqs. 4.32 and 6.31, when the material is at rest.
(d) Work out the formulas relating D and H to E and B for a medium moving with (ordinary) velocity u.
Reference equation 4.32
Reference equation 6.31
B = μH,
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