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Gyromagnetic ratio of a massive body.It is well known that the gyromagnetic ratio (g factor) of a classical, slowly rotating body whose charge density is proportional to its mass density must be equal to unity. However, if the body is very massive, the spacetime curvature effects of general relativity become important and the result g = 1 is no longer valid. We calculate here the gyromagnetic ratio of a slowly rotating, massive shell with uniform charge density. When the shell is large compared with the Schwarzschild radius we have g = 1, but as the shell becomes more massive the g factor increases. In the limit as the shell approaches its Schwarzschild radius we obtain g approaching 2 (the same value as for an electron).
Document ID
19730039543
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Cohen, J. M.
(Pennsylvania, University, Philadelphia, Pa.; NASA, Goddard Space Flight Center Greenbelt, Md., United States)
Tiomno, J.
(Institute for Advanced Study Princeton, N.J., United States)
Wald, R. M.
(Princeton University Princeton, N.J., United States)
Date Acquired
August 7, 2013
Publication Date
February 15, 1973
Publication Information
Publication: Physical Review D - Particles and Fields
Subject Category
Physics, Atomic, Molecular, And Nuclear
Accession Number
73A24345
Funding Number(s)
CONTRACT_GRANT: NSF GP-30799X
CONTRACT_GRANT: AEC 2171T
Distribution Limits
Public
Copyright
Other

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