arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 0812.1771math-phmath.MP
收藏

由幂级数展开求特征值:另一种方法

Eigenvalues from power--series expansions: an alternative approach

P. Amore, F. M. Fernandez

摘要:

对非谐振子的薛定谔方程的本征函数作适当的有理逼近,可以精确地得到本征值作为Hankel行列式的根序列的极限。这种方法的收敛速度大于一个完善的方法的基础上的幂级数展开加权高斯因子与可调参数(所谓的希尔行列式方法)。

英文摘要:

An appropriate rational approximation to the eigenfunction of the Schrödinger equation for anharmonic oscillators enables one to obtain the eigenvalue accurately as the limit of a sequence of roots of Hankel determinants. The convergence rate of this approach is greater than that for a well--established method based on a power--series expansions weighted by a Gaussian factor with an adjustable parameter (the so--called Hill--determinant method).

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。

↑