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Advanced Modeling and Simulation in Engineering Sciences
Fig. 4 | Advanced Modeling and Simulation in Engineering Sciences

Fig. 4

From: Convergence study of the h-adaptive PUM and the hp-adaptive FEM applied to eigenvalue problems in quantum mechanics

Fig. 4

Convergence of eigenvalues from the first two energy levels for the Schrödinger equation in the course of adaptive refinement. Red lines denote the lowest eigenvalue, whereas blue lines correspond to degenerate eigenvalues on the next energy level. a Coulomb potential (4 out of 5 eigenvalues are degenerate). b Harmonic potential (3 out of 4 eigenvalues are degenerate)

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