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Perurbation expansions for the spiked harmonic oscillator and related series involving the gamma function

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abstract

We study weak-coupling perturbation expansions for the ground-state energy of the Hamiltonian with the generalized spiked harmonic oscillator potential V(x) = Bx^2 + A/x^2 + lambda/x^alpha, and also for the bottoms of the angular momentum subspaces labelled by ell = 0,1,2 ..., in N-dimensions corresponding to the spiked harmonic oscillator potential: V(x) = x^2 + lambda/x^alpha, where alpha is a real positive parameter. A method of Znojil is then applied to obtain closed form expressions for the sums of some infinite series whose terms involve ratios and products of gamma functions.

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gr-qc 1

years

2019 1

verdicts

CONDITIONAL 1

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  • Landau levels in a gravitational field: The Schwarzschild spacetime case gr-qc · 2019-09-02 · conditional · none · ref 53 · internal anchor

    In Schwarzschild spacetime, a weak gravitational field splits Landau levels by an amount proportional to GMm times the square root of the magnetic field, with explicit Yukawa, power-law, and relativistic corrections derived.