Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2004-06-16
Phys.Rev. D70 (2004) 096014
Physics
High Energy Physics
High Energy Physics - Phenomenology
8 pages, 5 figures
Scientific paper
10.1103/PhysRevD.70.096014
In soliton models expressed in terms of the non-linear chiral field, the electric current has an anomalous gauge-field contribution as the baryon current does. We study the spin polarized Skyrmions coupled with the electromagnetic field via the gauged Wess-Zumino term and calculate configurations of the Skyrmion and the gauge field with boundary conditions to ensure the physical charge number for baryons. Although the electromagnetic field via the gauged Wess-Zumino term affects physical quantities in small amounts, we find that the magnetic field forms a dipole structure owing to a circular electric current around the spin quantization axis of the soliton. This is understood on an analogy with the Meissner effect in the super conductor.The electric charge distributions turn out to have characteristic structures depending on the total charge, which suggests the intrinsic deformation of baryons due to orbital motions of the constituents.
Ohta Koichi
Ohtani Munehisa
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