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arxiv: hep-ph/9504329 · v1 · submitted 1995-04-18 · ✦ hep-ph

The Rotationally Improved Skyrmion, or ``RISKY''

classification ✦ hep-ph
keywords modelimprovedknownproblemriskyrotationallyskyrmeskyrmion
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The perceived inability of the Skyrme model to reproduce pseudovector pion-baryon coupling has come to be known as the ``Yukawa problem.'' In this talk, we review the complete solution to this problem. The solution involves a new configuration known as the rotationally improved Skyrmion, or ``RISKY,'' in which the hedgehog structure is modified by a small quadrupole distortion. We illustrate our ideas both in the Skyrme model and in a simpler model with a global U(1) symmetry.

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