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arXiv math-ph/9909015math-phmath.MP
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(4+1)维Yang Mills模型和(2+1)维S^2西格玛模型的快速爆破

Fast Blow Up in the (4+1)-dimensional Yang Mills Model and the(2+1)-dimensional S^2 Sigma Model

Jean Marie Linhart

摘要:

本文研究了绝热极限下(4+1)维杨-米尔斯模型和(2+1)维S^2西格玛模型的荷两扇区球对称孤子(也称为$\IC P^1$波映射)的奇异性形成.这两种模式非常相似。采用迭代有限差分法对径向对称解进行了数值研究。从一个有效的拉格朗日量和数值证实的预测朝着一个奇点的演变。在这两个模型的特征的时间片f(r,T)与T固定的形状,并最终产生一个新的近似解的微分方程,成为精确的绝热极限。

英文摘要:

We study singularity formation in spherically symmetric solitons of the (4+1) dimensional Yang Mills model and the charge two sector of the (2+1) dimensional S^2 sigma model, also known as $\IC P^1$ wave maps, in the adiabatic limit. These two models are very similar. Studies are performed numerically on radially symmetric solutions using an iterative finite differencing scheme. Predictions for the evolution toward a singularity are made from an effective Lagrangian and confirmed numerically. In both models a characterization of the shape of a time slice f(r,T) with T fixed is provided, and ultimately yields an new approximate solutions to the differential equations that becomes exact in the adiabatic limit.

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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