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Incorporating non-local anyonic statistics into a graph decomposition

Matthias Mühlhauser, Viktor Kott, Kai Phillip Schmidt

SciPost Phys. Core 7, 031 (2024) · published 30 May 2024

Abstract

In this work we describe how to systematically implement a full graph decomposition to set up a linked-cluster expansion for the topological phase of Kitaev's toric code in a field. This demands to include the non-local effects mediated by the mutual anyonic statistics of elementary charge and flux excitations. Technically, we describe how to consistently integrate such non-local effects into a hypergraph decomposition for single excitations. The approach is demonstrated for the ground-state energy and the elementary excitation energies of charges and fluxes in the perturbed topological phase.

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