In a Kitaev chain, a mobile impurity undergoes a sharp polaron-to-molecule transition when the host is topologically trivial and a smooth crossover when the host is topological, a possible bulk topology signature.
Frolov, Quantum computing’s reproducibility crisis: Majorana fermions, Nature 592, 350 (2021)
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A Mobile Impurity in the Kitaev Chain: Phase Diagram and Signatures of Topology
In a Kitaev chain, a mobile impurity undergoes a sharp polaron-to-molecule transition when the host is topologically trivial and a smooth crossover when the host is topological, a possible bulk topology signature.