2017/02/03 by Kunle Adegoke, Adegoke, Kunle, Adenike Olatinwo +3
Engineering · Mathematics · #Electromagnetic Simulation and Numerical Methods #FOS: Physical sciences #Fractional Differential Equations Solutions #Numerical methods for differential equations #Quantum Physics (quant-ph)
paper · pdf · doi:10.48550/arxiv.1702.01116
openalex publication_date 2017/02/03 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
In this note we show that the standard Rayleigh-Schrödinger (RS) perturbation method gives the same result as the hypervirial pertubative method (HPM), for an approximate analytic expression for the energy eigenvalues of the bounded quartic oscillator. This connection between the HPM and the RS method went unnoticed for a long time, apparently because it was not obvious that the resulting polygamma sums to be evaluated in the RS method could, in fact, be expressed in closed form.