| DATE: |
2006-05-19 16:00 - 17:00 |
| PLACE: |
Kenkyu Honkan Rm. 321 |
| TITLE: |
Spin polarized Skyrmions with gauged Wess-Zumino term and induced representation |
| CONTACT: |
tsuda |
| SPEAKER: |
Munehisa Ohtani (KEK) |
| LANGUAGE: |
Japanese |
| ABSTRACT: |
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. 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. Prospect for an application of induced representaion to the non-linear field theory will be mentioned.
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