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PHYSICAL REVIEW A 75, 052113 2007
Photon mass and quantum effects of the Aharonov-Bohm type
G. Spavieri, and M. Rodriguez
The possibility that the photon possesses a finite mass and
its physical implications have been discussed theoretically
and investigated experimentally by several researchers 1–7.
Originally, the finite photon mass m measured in cm−1 has
been related to the range of validity of the Coulomb law
1,2. If m0 this law is modified by the Yukawa potential
Ur=e−m r / r, with m
−1=/mphc=C/2 , where mph is expressed
in grams and C is the Compton wavelength of the
photon.
There are direct and indirect tests for the photon mass.
The best result obtained so far through developments of the
original Cavendish technique for direct tests of Coulomb’s
law is still that from 1971 by Williams, Faller, and Hill 2.
The null result of this experiment expressed in the form of
range of the photon rest mass is m−13109 cm. Indirect
methods are provided by geomagnetic and astronomical
tests. By studying the behavior of the magnetic field of planets,
Davis, Goldhaber, and Nieto 3 were able to determine
that m−151010 cm.
Other indirect verifications are related to lumped circuit
tests 4, cryogenic experiments 5, and the ambient cosmic
vector potential method developed by Lakes 6. If m0
the ambient cosmic vector potential acquires physical signifi-
cance and may interact with the dipole field of a magnetized
toroid. The related experiment by Luo, Tu, Hu, and Luan 7
yielded the range m−11.661013 cm and corresponding
photon mass mph2.110−51 g.
Several conjectures related to the Aharonov-Bohm AB
effect 8 have been develope…
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