C S Unnikrishnan and G T Gillies 2004 Metrologia 41 S125 doi:10.1088/0026-1394/41/5/S03
C S Unnikrishnan1,3 and G T Gillies2
Show affiliationsThe equality of the charges of the electron and the proton, and the charge neutrality of the neutron are of great significance in the fundamental theory of particles. This equality suggests a deep symmetry between leptons and quarks that is not yet revealed in other experiments. The electrical neutrality of bulk matter is a direct result of this characteristic of the fundamental charges, with important consequences for precise tests of fundamental physical laws and for electrical metrology. The question is of interest also in cosmology. In this paper, we discuss the experimental evidence for the equality of the fundamental electrical charges, its implications and the possibility of improved experiments.
85.85.+j Micro- and nano-electromechanical systems (MEMS/NEMS) and devices
Issue 5 (October 2004)
Received 15 March 2004
Published 16 September 2004
C S Unnikrishnan and G T Gillies 2004 Metrologia 41 S125
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Yves Brihaye et al 2004 Class. Quantum Grav. 21 517
Franco Pavese 2009 Metrologia 46 L29
Yang Ying-Ge et al 2004 Chinese Phys. Lett. 21 955
A Rahman et al 2004 Plasma Sources Sci. Technol. 13 537
M C Rogge and R J Haug 2009 New J. Phys. 11 113037
Joe Henson 2006 Class. Quantum Grav. 23 L29
Y Jafry 1998 Class. Quantum Grav. 15 1
I Ya Korenblit and E F Shender 1979 J. Phys. F: Met. Phys. 9 2245