Manipulating Non-Abelian Anyons in a Chiral Multichannel Kondo Model

Autor:	Lotem, Matan, Sela, Eran, Goldstein, Moshe
Rok vydání:	2022
Předmět:	Condensed Matter - Strongly Correlated Electrons Condensed Matter - Mesoscale and Nanoscale Physics Quantum Physics
Zdroj:	Phys. Rev. Lett. 129, 227703 (2022)
Druh dokumentu:	Working Paper
DOI:	10.1103/PhysRevLett.129.227703
Popis:	Non-Abelian anyons are fractional excitations of gapped topological models believed to describe certain topological superconductors or quantum Hall states. Here, we provide the first numerical evidence that they emerge as independent entities also in gapless electronic models. Starting from a multi-impurity multichannel chiral Kondo model, we introduce a novel mapping to a single-impurity model, amenable to Wilson's numerical renormalization group. We extract its spectral degeneracy structure and fractional entropy, and calculate the $F$ matrices, which encode the topological information regarding braiding of anyons, directly from impurity spin-spin correlations. Impressive recent advances on realizing multichannel Kondo systems with chiral edges may thus bring anyons into reality sooner than expected. Comment: 5 pages, 3 figures + Supplemental material - published version
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/2205.04418 Zobrazit plný text záznamu View this record from Arxiv