Convergence of Scaled Delta Expansion: Anharmonic Oscillator
نویسندگان
چکیده
منابع مشابه
Convergence of Scaled Delta Expansion: Anharmonic Oscillator
We prove that the linear delta expansion for energy eigenvalues of the quantum mechanical anharmonic oscillator converges to the exact answer if the order dependent trial frequency Ω is chosen to scale with the order as Ω = CN ; 1/3 < γ < 1/2, C > 0 as N → ∞. It converges also for γ = 1/3, if C ≥ αcg, αc ≃ 0.570875, where g is the coupling constant in front of the operator q/4. The extreme case...
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ژورنال
عنوان ژورنال: Annals of Physics
سال: 1995
ISSN: 0003-4916
DOI: 10.1006/aphy.1995.1059