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arXiv 2307.09355hep-th
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有理 Skyrmion

Rational Skyrmions

Derek Harland, Paul Sutcliffe

AI总结:

提出利用 Yang-Mills 瞬子 ADHM 数据构造空间坐标显式有理函数形式 Skyrmion 的方法,并重子数 1、2 示例验证其能量与构型优势。

摘要:

本文引入了一种构造 Skyrmion 近似解的新方法,这些近似解是空间笛卡尔坐标的显式有理函数。该方案利用 Yang-Mills 瞬子的 ADHM 数据来生成一个 Skyrmion,其重子数等于瞬子数。Skyrmion 的公式只涉及对 ADHM 数据的求值,这与 Atiyah-Manton 构造形成对比;后者需要求解一个微分方程,而该方程只有在球对称 Skyrmion 的情形下才能显式求解。文中详细研究了重子数为一和二的例子。重子数为一的有理 Skyrmion 的能量低于 Atiyah-Manton Skyrmion,而后者的能量已经处于真实数值计算所得 Skyrmion 能量的百分之一以内。文中还给出了一族重子数为二的 Skyrmion,其中包括一个轴对称 Skyrmion;随着参数变化,它会平滑地转变为一对充分分离的单个 Skyrmion。

英文摘要:

A new method is introduced to construct approximations to Skyrmions that are explicit rational functions of the spatial Cartesian coordinates. The scheme uses ADHM data of a Yang-Mills instanton to produce a Skyrmion with a baryon number that is equal to the instanton number. The formula for the Skyrmion involves only the evaluation of the ADHM data, in contrast to the Atiyah-Manton construction that requires the solution of a differential equation that can only be solved explicitly in the case of a spherically symmetric Skyrmion. Examples with baryon numbers one and two are studied in detail. The energy of the rational Skyrmion with baryon number one is lower than that of the Atiyah-Manton Skyrmion, which is already within one percent of the energy of the true numerically computed Skyrmion. A family of baryon number two Skyrmions is presented, which includes an axially symmetric Skyrmion that smoothly transforms to a pair of well-separated single Skyrmions as the parameter is varied.

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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