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arXiv 2004.02801hep-thnlin.PS
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磁性杂质存在下的Maxwell- $CP(2)$涡旋

Maxwell-$CP(2)$ vortices in the presence of magnetic impurities

E. da Hora, S. Krusch

摘要:

我们考虑扩展到包含磁性杂质的Maxwell- $CP(2)$模型。我们把注意力集中在与时间无关的配置与径向对称性,从我们最小化相应的能量以下Bogomol'nyi-Prasad-Sommerfield(BPS)处方。我们使用一般的一阶表达式,以引入修改后的情况下,杂质起着相关的作用。然后,我们解决了有效的一阶方程数值通过有限差分法,从我们评论的主要变化的形状上的最终解决方案所造成的存在下的局部杂质。我们还讨论了杂质成为δ函数时的极限。

英文摘要:

We consider a Maxwell-$CP(2)$ model extended to include a magnetic impurity. We focus our attention on the time-independent configurations with radial symmetry, from which we minimize the corresponding energy by following the Bogomol'nyi-Prasad-Sommerfield (BPS) prescription. We use the general first-order expressions in order to introduce modified scenarios in which the impurity plays a relevant role. We then solve the effective first-order equations numerically by means of a finite-difference scheme, from which we comment on the main changes on the shape of the final solutions caused by the presence of a localised impurity. We also discuss the limit when the impurity becomes a delta function.

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