Density matrix renormalization group study of the interacting Kitaev chain with quasi-periodic disorder

K. S. C. Decker and C. Karrasch ()
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K. S. C. Decker: Technische Universität Braunschweig
C. Karrasch: Technische Universität Braunschweig

The European Physical Journal B: Condensed Matter and Complex Systems, 2024, vol. 97, issue 8, 1-9

Abstract: Abstract We document the ground state phase diagram of the one-dimensional Kitaev chain with quasi-periodic disorder in the presence of two-body interactions. Our data were obtained for systems of $$L=1000$$ L = 1000 sites using large-scale density-matrix renormalization group numerics and is benchmarked against known results for the clean system. We demonstrate that moderate quasi-periodic disorder stabilizes the topological phase both for repulsive and attractive interactions. For larger disorder strengths, the system features re-entrance behavior and multiple phase transitions. Graphical abstract Phase diagram as a function of the chemical potential and the disorder strength for repulsive interactions

Date: 2024
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DOI: 10.1140/epjb/s10051-024-00690-8

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