arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2209.06607hep-thnucl-th
收藏

Skyrmions与大质量π介子的约束瞬子近似

Constrained instanton approximation of Skyrmions with massive pions

Alberto García Martín-Caro

摘要:

本文提出了利用$\rm SU(2)$ Yang-Mills-Higgs理论的约束瞬子解(受约束的欧几里德运动方程的近似解)的完整性来近似具有大质量π介子的手征模型中的Skyrmion解的思想.由于希格斯机制,规范场获得了非零质量,这一事实意味着一个受约束的瞬子在远离其中心的地方以指数方式衰减,它通过阿蒂亚-曼顿构造产生的Skyrmion组态也是如此。当包含π介子质量时,这正是真实Skyrmion解在大距离下所期望的行为。

英文摘要:

We present the idea of using the holonomy along a line of a constrained instanton solution (an approximate solution of the Euclidean equations of motion subject to a constraint) of an $\rm SU(2)$ Yang-Mills-Higgs theory to approximate the Skyrmion solution in a chiral model with massive pions. The fact that the gauge field acquires a nonzero mass due to the Higgs mechanism implies that a constrained instanton decays exponentially far from its center, and so does the Skyrmion configuration that it generates via the Atiyah-Manton construction. This is precisely the desired behavior at large distances for the true Skyrmion solutions when the pion mass is included.

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。

↑