arXivDaily arXiv每日学术速递 周一至周五更新
arXiv math-ph/0105048math-phmath.MP
收藏

绝热极限下非线性波动方程奇异性形成的数值研究

Numerical investigations of singularity formation in non-linear wave equations in the adiabatic limit

Jean Marie Linhart

摘要:

本文研究了(4+1)维双曲型杨-米尔斯方程球对称解和(2+1)维CP^1波映射球对称解的奇异性形成。这些方程具有已知的时间无关(静态)解的模空间。演化发生在静态解的模空间附近。使用迭代有限差分方案对演化进行数值建模,并且在接近绝热极限的情况下进行建模,即,以较小的速度。数值方案的稳定性进行了分析和增长被证明是有界的,产生的数值方案的收敛估计。该方法的轨迹的特点,以及在任何给定的时间在演变过程中的轮廓的形状。

英文摘要:

This dissertation deals with singularity formation in spherically symmetric solutions of the hyperbolic Yang Mills equations in (4+1) dimensions and in spherically symmetric solutions of C P^1 wave maps in (2+1) dimensions. These equations have known moduli spaces of time-independent (static) solutions. Evolution occurs close to the moduli space of static solutions. The evolution is modeled numerically using an iterative finite differencing scheme, and modeling is done close to the adiabatic limit, i.e., with small velocities. The stability of the numerical scheme is analyzed and growth is shown to be bounded, yielding a convergence estimate for the numerical scheme. The trajectory of the approach is characterized, as well as the shape of the profile at any given time during the evolution.

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。

↑