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abstraction > theory related concept > problem > magnetic monopole problem |
magnetic monopole problem | ||||
subject | fact |
magnetic monopole problem | has definition A problem, discovered by John Preskill in 1979, concerning the compatibility of grand unified theories with standard cosmology. Preskill showed that if standard cosmology were combined with grand unified theories, far too many magnetic monopoles would have been produced in the early universe. | |
is an instance of problem |