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arXiv · 1808.06947

Exact ground states for interacting Kitaev chains

Jurriaan Wouters·Hosho Katsura·Dirk Schuricht
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Abstract

We introduce a frustration-free, one-dimensional model of spinless fermions with hopping, p-wave superconducting pairing and alternating chemical potentials. The model possesses two exactly degenerate ground states even for finite system sizes. We present analytical results for the strong Majorana zero modes, the phase diagram and the topological order. Furthermore, we generalise our results to include interactions.

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Jurriaan Wouters, Hosho Katsura, Dirk Schuricht. 2018-08-21. Exact ground states for interacting Kitaev chains. https://doi.org/10.1103/physrevb.98.155119

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