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arXiv 1601.05024hep-thnucl-th
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放松Skyrme模型

Loosening up the Skyrme model

Sven Bjarke Gudnason

摘要:

我们认为Skyrme模型与额外的标量势,减少了经典的结合能的Skyrmions约3%的水平-不改变π介子质量-如果我们坚持保持柏拉图对称性,通常具有Skyrmions。所考虑的势的副作用是1-Skyrmion的较小尺寸导致较小的转动惯量,进而在半经典量子化时对能量的较大自旋贡献。在考虑量子贡献后,我们发现总结合能在6%水平。

英文摘要:

We consider the Skyrme model with the addition of extra scalar potentials that decrease the classical binding energies of the Skyrmions to about the 3% level -- without altering the pion mass -- if we insist on keeping platonic symmetries that are usually possessed by Skyrmions. A side effect of the potentials under consideration is the smaller size of the 1-Skyrmion resulting in a smaller moment of inertia and in turn a larger spin contribution to the energy upon semi-classical quantization. After taking into account the quantum contributions we find total binding energies at the 6% level.

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