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arXiv quant-ph/0703262quant-phhep-th
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求解非谐振子:调整边界条件

Solving the Anharmonic Oscillator: Tuning the Boundary Condition

David Leonard, Paul Mansfield

摘要:

我们概述了一个非常有效的方法来产生解决方案的量子非谐振子与x^{2 M}的潜力。我们解决薛定谔方程的自由参数,然后调整到正确的边界条件,通过生成一个幂级数展开的波函数在x和应用修改后的Borel重算技术,以获得大x的行为。这个过程允许我们计算能量本征值到任意精度水平。即使在计算能力不高的情况下也能达到很高的精度。我们的技术扩展到所有级别的激发,并产生正确的解决方案,双阱振荡器,即使他们是由非微扰效应为主。

英文摘要:

We outline a remarkably efficient method for generating solutions to quantum anharmonic oscillators with an x^{2M} potential. We solve the Schroedinger equation in terms of a free parameter which is then tuned to give the correct boundary condition by generating a power series expansion of the wavefunction in x and applying a modified Borel resummation technique to obtain the large x behaviour. The process allows us to calculate energy eigenvalues to an arbitrary level of accuracy. High degrees of precision are achieved even with modest computing power. Our technique extends to all levels of excitation and produces the correct solution to the double well oscillators even though they are dominated by non-perturbative effects.

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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