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arXiv 1607.04286hep-thnucl-th
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BPS skyrmions的径向振动

Radial vibrations of BPS skyrmions

C. Adam, M. Haberichter, T. Romanczukiewicz, A. Wereszczynski

摘要:

研究了BPS Skyrme模型中球对称Skyrmions的径向振动。具体地说,我们数值求解线性化场方程的小波动的skyrmion背景下,线性稳定的振荡和(不稳定)共振。这是补充的完全非线性系统的数值解,这证实了所有的线性分析的结果。在所有情况下,所得到的基本激励提供了一个相当准确的值的罗珀共振,支持的假设,BPS Skyrme模型已经给出了合理的近似描述这种共振。此外,对于许多潜在的额外的更高的共振出现,再次与已知的实验结果一致。

英文摘要:

We study radial vibrations of spherically symmetric skyrmions in the BPS Skyrme model. Concretely, we numerically solve the linearised field equations for small fluctuations in a skyrmion background, both for linearly stable oscillations and for (unstable) resonances. This is complemented by numerical solutions of the full nonlinear system, which confirm all the results of the linear analysis. In all cases, the resulting fundamental excitation provides a rather accurate value for the Roper resonance, supporting the hypothesis that the BPS Skyrme model already gives a reasonable approximate description of this resonance. Further, for many potentials additional higher resonances appear, again in agreement with known experimental results.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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