arXivDaily arXiv每日学术速递 周一至周五更新
arXiv周末暂无论文更新,休息一下吧,周末愉快~~
arXiv 1307.4435hep-thgr-qcmath-phmath.MPnucl-th
收藏

双球上含矢量介子的多孤子

Multi-solitons with vector mesons on the two-sphere

Federico Carrasco, Oscar Reula

摘要:

最近的研究表明,3D Skyrme模型的静态解与其低维模拟(baby-Skyrme模型)在两个球体上的静态解之间有很强的联系。我们已经找到了几乎相同的解决方案,考虑一个替代的二维模型,其中矢量介子场的引入和耦合的系统,而不是通常的Skyrme项。已经知道,在三维中包括该矢量介子场使非线性西格玛模型稳定,而不需要π介子场的导数上的四次项(Skyrme项)。在目前的工作中,我们已经数值搜索静态多孤子解决方案,这种替代稳定的情况下,其中的基空间是一个两个球。此外,我们分析了这些解决方案在小扰动下的完全动力学设置的稳定性。我们还考虑了纳入一个特定的潜在项到拉格朗日,并探讨了低/高密度阶段的孤子的参数空间的不同范围内,实现孤子本地化足够,使我们能够与平面(二维)的研究。

英文摘要:

Recent studies have suggested a strong connection between the static solutions of the 3D Skyrme model and those corresponding to its low-dimensional analog (baby-Skyrme model) on a two-sphere. We have found almost identical solutions considering an alternative two-dimensional model in which a vector meson field is introduced and coupled to the system, instead of the usual Skyrme term. It has been known that including this vector meson field in three dimensions stabilizes the non-linear sigma model without the need of a term quartic on derivatives of the pion fields (Skyrme term). In the present work, we have numerically searched for static multi-solitonic solutions of this alternative stabilization, for the case in which the base-space is a two-sphere. Moreover, we analyze the stability of these solutions under small perturbations in a fully dynamical setting. We have also considered the inclusion of a particular potential term into the Lagrangian, and explored the low/high-density phases of solitons for different ranges of the parameter space, achieving solitons localized enough that allow us to compare with planar (two-dimensional) studies.

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。

↑