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arXiv · 1408.5379

Configuration interaction matrix elements for the quantum Hall effect

Rachel Wooten·Joseph Macek
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Abstract

We derive analytic expressions for the two-body matrix elements in finite spherical quantum Hall systems in terms of a general scalar interaction expressed as a sum over Legendre polynomials, and we derive the corresponding pair pseudopotentials from these matrix elements. The relationship between the effective spatial potential and the pseudopotential is one-to-one in this framework, and we show how any complete model pseudopotential can be analytically inverted to give a unique corresponding spatial potential. As an example, we find the spatial potential that produces a harmonic pseudopotential and verify that it fails to break the angular momentum degeneracy of the many-body quantum Hall system. We also include additional examples to demonstrate the use of the inversion technique.

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Rachel Wooten, Joseph Macek. 2014-10-01. Configuration interaction matrix elements for the quantum Hall effect. https://arxiv.org/abs/1408.5379

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