講演者：大橋 圭介（大阪市立大）

題名

NonAbelian Vortex with Aharonov-Bohm Effect

アブスト

The interplay of the gauge dynamics and flavor symmetries often lead to
remarkably subtle phenomena in the presence of solitonlike configurations.
NonAbelian vortices - vortex solutions with continuous internal
orientational moduli - are an example. Here we study the effect of
weakly gauging a U(1)R subgroup of the flavor symmetry on such BPS
vortex solutions, in a prototype setting of SU(2) × U(1) gauge theory
with Nf = 2 sets of fundamental scalars. The system has now an
unbroken U(1) “electromagnetic” gauge symmetry. The weak U(1)R
gauging converts the well-known CP1 orientational modulus |B| of the
nonAbelian vortex into the strength of the magnetic flux characterizing
the electromagnetic Aharonov-Bohm effect. The phase of B remains a
genuine zero mode, rendering the vortex into a superconducting string.