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arXiv 2103.15669hep-thmath-phmath.MP
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由瞬子得到的相容双Skyrmion位形空间

A consistent two-skyrmion configuration space from instantons

Chris Halcrow, Thomas Winyard

摘要:

为了研究Skyrme模型中的核系统,首先必须构造一个低能Skyrme组态空间。然而,这个位形空间并没有数学定义,甚至连它的基本性质(如维数)都没有共识。在这里,我们提出,完整的瞬子模空间可以用来构造一个一致的Skyrmion配置空间,只要Skyrme模型耦合到介子。每个瞬子产生一个独特的skyrmion和我们重新解释的$8N$瞬子模量作为物理自由度的Skyrme模型。在这幅图中,一个单独的Skyrmion有六个零模和两个非零模:一个控制溶液的整体尺度,一个控制介子场的能量。我们详细研究了$N=1$和$N=2$系统。两个相互作用的Skyrmion可以通过散射激发介子场,这表明介子场和Skyrme场是内在联系的。我们的建议是第一个一致的流形描述的两skyrmion配置空间。该方法也可以推广到更高的$N$,从而提供了一个通用的框架来研究任何skyrmion配置空间。

英文摘要:

To study a nuclear system in the Skyrme model one must first construct a space of low energy Skyrme configurations. However, there is no mathematical definition of this configuration space and there is not even consensus on its fundamental properties, such as its dimension. Here, we propose that the full instanton moduli space can be used to construct a consistent skyrmion configuration space, provided that the Skyrme model is coupled to a meson. Each instanton generates a unique skyrmion and we reinterpret the $8N$ instanton moduli as physical degrees of freedom in the Skyrme model. In this picture a single skyrmion has six zero modes and two non-zero modes: one controls the overall scale of the solution and one the energy of the meson field. We study the $N=1$ and $N=2$ systems in detail. Two interacting skyrmions can excite the meson field through scattering, suggesting that the meson and Skyrme fields are intrinsically linked. Our proposal is the first consistent manifold description of the two-skyrmion configuration space. The method can also be generalised to higher $N$ and thus provides a general framework to study any skyrmion configuration space.

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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