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Particle-hole symmetry, many-body localization, and topological edge modes

Abstract:

We study the excited states of interacting fermions in one dimension with particle-hole symmetric disorder (equivalently, random-bond XXZ chains) using a combination of renormalization group methods and exact diagonalization. Absent interactions, the entire many-body spectrum exhibits infinite-randomness quantum critical behavior with highly degenerate excited states. We show that though interactions are an irrelevant perturbation in the ground state, they drastically affect the structure of ...

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Publication status:
Published
Peer review status:
Peer reviewed

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Publisher copy:
10.1103/PhysRevB.93.134207

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Institution:
University of Oxford
Division:
MPLS
Department:
Physics
Sub department:
Theoretical Physics
Role:
Author
Publisher:
American Physical Society Publisher's website
Journal:
Physical Review B Journal website
Volume:
93
Issue:
13
Article number:
134207
Publication date:
2016-04-14
DOI:
EISSN:
2469-9969
ISSN:
2469-9950
Source identifiers:
725240
Pubs id:
pubs:725240
UUID:
uuid:92fd73fc-e844-4035-bf69-96cdf38abb3b
Local pid:
pubs:725240
Deposit date:
2017-09-05

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