This quantity is equal to the curl of the vector potential. For 10 points each:
[10e] Name this field symbolized B, which is generated by moving charges. Unlike the electric field, this field does not have monopoles.
ANSWER: magnetic field
[10m] The law stating that magnetic monopoles do not exist is named for Gauss, and is written mathematically as this operation of B equals zero.
ANSWER: divergence [or div or del-dot or nabla-dot]
[10h] In the Aharanov-Bohm effect, particles acquire a change in this quantity when moving through a region of nonzero vector potential. That version of this quantity is sometimes named for Berry.
ANSWER: phase [accept Berry phase or Pancharatnam phase or Pancharatnam-Berry phase or geometric phase]
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