We study the eigenstates of a paradigmatic model of many-body localization in the Fock basis constructed out of the natural orbitals. By numerically studying the participation ratio, we identify a sharp crossover between different phases at a disorder strength close to the disorder strength at which subdiffusive behaviour sets in, significantly below the many-body localization transition. We repeat the analysis in the conventionally used computational basis, and show that many-body localized eigenstates are much stronger localized in the Fock basis constructed out of the natural orbitals than in the computational basis.
Cited by 3
Nicolas Macé et al., Multifractal Scalings Across the Many-Body Localization Transition
Phys. Rev. Lett. 123, 180601 (2019) [Crossref]
Miroslav Hopjan et al., Many-body localization from a one-particle perspective in the disordered one-dimensional Bose-Hubbard model
Phys. Rev. A 101, 063617 (2020) [Crossref]
I. García-Mata et al., Two critical localization lengths in the Anderson transition on random graphs
Phys. Rev. Research 2, 012020 (2020) [Crossref]
Ontology / TopicsSee full Ontology or Topics database.
Authors / Affiliations: mappings to Contributors and OrganizationsSee all Organizations.
- 1 Institute of Physics, University of Amsterdam [IoP, UvA]
- 2 Международный центр квантовой оптики и квантовых технологий / Russian Quantum Center
- 3 Universiteit Leiden / Leiden University [UL]