Abraham–Minkowski controversy

The Abraham–Minkowski controversy is a physics debate concerning electromagnetic momentum within dielectric media.^[1][2] Two equations were first suggested by Hermann Minkowski (1908)^[3] and Max Abraham (1909)^[4][5] for this momentum. They predict different values, from which the name of the controversy derives.^[6] Experimental support has been claimed for both.^{[7][8][9][10]}

The two points of view have different physical interpretations and thus neither need be more correct than the other.^[11] David J. Griffiths argues that, in the presence of matter, only the total stress–energy tensor carries unambiguous physical significance; how one apportions it between an "electromagnetic" part and a "matter" part depends on context and convenience.^[12]

Several papers have claimed to have resolved this controversy.^{[13][14][15][16][17][18]}

The controversy is still claimed to have importance in physics beyond the Standard Model where electrodynamics gets modifications, like in the presence of axions.^[19]

• Cho, Adrian (2004). "Momentum From Nothing". Physical Review Focus. Vol. 13. doi:10.1103/PhysRevFocus.13.3. ISSN 1539-0748.
• Schirber, Michael (2008). "Light Bends Glass". Physical Review Focus. Vol. 22. doi:10.1103/PhysRevFocus.22.20. ISSN 1539-0748.

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