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<p>By means of a suitable rational approximation to the logarithmic derivative of the wavefunction we obtain tight upper and lower bounds to the eigenvalues and critical parameters of the quartic double-well potential.</p>

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Tight upper and lower bounds to the eigenvalues and critical parameters of a double well

  • 期刊论文

  • 发表日期：

    2026年5月18日

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  • Francisco M. Fernández

摘要

By means of a suitable rational approximation to the logarithmic derivative of the wavefunction we obtain tight upper and lower bounds to the eigenvalues and critical parameters of the quartic double-well potential.