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Condensed Matter > Disordered Systems and Neural Networks

Title: Topological order in random interacting Ising-Majorana chains stabilized by many-body localization

Abstract: We numerically explore $\mathbb Z_2$-symmetric random interacting Ising-Majorana chains at high energy. A very rich phase diagram emerges with two topologically distinct many-body localization (MBL) regimes separated by a much broader thermal phase than previously found. This is a striking consequence of the avalanche theory. We further find MBL spin-glass order always associated to a many-body spectral pairing, presumably signaling a strong zero mode operator which opens fascinating perspectives for MBL-protected topological qubits.
Subjects: Disordered Systems and Neural Networks (cond-mat.dis-nn); Strongly Correlated Electrons (cond-mat.str-el)
Journal reference: Phys. Rev. Research 4, L032016 (2022)
DOI: 10.1103/PhysRevResearch.4.L032016
Cite as: arXiv:2201.00556 [cond-mat.dis-nn]
  (or arXiv:2201.00556v3 [cond-mat.dis-nn] for this version)

Submission history

From: Nicolas Laflorencie [view email]
[v1] Mon, 3 Jan 2022 10:04:52 GMT (3028kb,D)
[v2] Tue, 19 Apr 2022 16:17:31 GMT (3064kb,D)
[v3] Thu, 4 Aug 2022 14:12:12 GMT (3065kb,D)

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