Numerical evidence that the perturbation expansion for a non-Hermitian \(\mathcal{PT}\)-symmetric Hamiltonian is Stieltjes (Q2774890)
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scientific article; zbMATH DE number 1711333
| Language | Label | Description | Also known as |
|---|---|---|---|
| English | Numerical evidence that the perturbation expansion for a non-Hermitian \(\mathcal{PT}\)-symmetric Hamiltonian is Stieltjes |
scientific article; zbMATH DE number 1711333 |
Statements
26 February 2002
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\({\mathcal P}{\mathcal T}\) symmetry
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weak-coupling perturbation series
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ground-state energy
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coefficients of the Rayleigh-Schrödinger perturbation series
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Padé-summation
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Padé-prediction
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quartic anharmonic oscillator
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0.8990842
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0.8895587
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0.8878585
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0.88147426
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0.8768638
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0.87307036
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0.87163335
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0.87139076
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Numerical evidence that the perturbation expansion for a non-Hermitian \(\mathcal{PT}\)-symmetric Hamiltonian is Stieltjes (English)
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