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New Upper Limit For Photon Mass

DEC 01, 1968

DOI: 10.1063/1.3034650

Physics Today

If the photon has a mass, say Alfred S. Goldhaber and Michael M. Nieto in Phys. Rev. Letters (21, 567, 1968), it is less than 4.0×10−48 gram. They derive their number by Erwin Schrödinger’s method. A finite mass adds a term to Maxwell’s equations and makes the calculated vector potential fall off exponentially like a Yukawa potential carried by a finite‐mass meson. In the solution the principal observable effect is an apparent constant component to be added to the earth’s dipole magnetic field.

This article is only available in PDF format

© 1968 American Institute of Physics
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This Content Appeared In
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Volume 21, Number 12

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