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arXiv 1303.5035hep-th
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广义Skyrme-Faddeev模型的精确纽结解

Exact knot solutions in a generalized Skyrme-Faddeev model

L. P. Zou, P. M. Zhang, D. G. Pak

摘要:

我们提出了一个带有附加标量场的广义Skyrme-Faddeev型理论。在模型参数的特殊情况下,有一个理论承认由Aratyn-Ferreira-Zimerman(AFZ)可积CP 1模型的一类精确环形孤子给出的精确纽结解。在一般情况下,理论承认一个单位的霍普夫收费的精确纽结解。对于更高的霍普夫费用,我们进行数值分析的解决方案,并获得估计的结能量使用能量最小化过程的基础上与AFZ场配置和有理函数的ananterior。我们表明,AFZ配置提供了一个更好的近似解。相应的结能与低能束缚的标准定律E_H \simeq Q_H^{3/4}符合得很好。

英文摘要:

We propose a generalized Skyrme-Faddeev type theory with an additional scalar field. In a special case of model parameters one has a theory which admits exact knot solutions given by a class of exact toroidal solitons from Aratyn-Ferreira-Zimerman (AFZ) integrable CP1 model. In a general case the theory admits an exact knot solution for a unit Hopf charge. For higher Hopf charges we perform numeric analysis of the solutions and obtain estimates for the knot energies using energy minimization procedure based on ansatz with AFZ field configurations and with rational functions. We show that AFZ configurations provide a better approximate solutions. The corresponding knot energies are in a good agreement with a standard law for the low energy bound, E_H\simeq Q_H^{3/4}.

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