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The Casimir energy for a conducting spherical shell of radius a is computed using a direct mode summation approach. An essential ingredient is the implementation of a recently proposed method based on Cauchy's theorem for an evaluation of the eigenfrequencies of the system. It is shown, however, that this earlier calculation uses an improper set of modes to(More)
A Galilean Chern-Simons field theory is formulated for the case of two interacting spin-1/2 fields of distinct masses M and M ′. A method for the construction of states containing N particles of mass M and N ′ particles of mass M ′ is given which is subsequently used to display equivalence to the spin-1/2 Aharonov-Bohm effect in the N = N ′ = 1 sector of(More)