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Many-body localization in the Fock space of natural orbitals

by Wouter Buijsman, Vladimir Gritsev, Vadim Cheianov

Submission summary

As Contributors: Wouter Buijsman
Arxiv Link:
Date submitted: 2018-04-12
Submitted by: Buijsman, Wouter
Submitted to: SciPost Physics
Domain(s): Theor. & Comp.
Subject area: Quantum Physics


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 marking the onset of eigenstate localization at a disorder strength 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.

Current status:
Editor-in-charge assigned, manuscript under review

List of changes

Besides the changes mentioned in the replies to the referee reports, we have made the following changes:

- We have re-organized Section 4 in view of the new content added.
- We have updated Ref. [26] of the revised manuscript from the arXiv to the published version, added Ref. [30] of the revised manuscript, and removed Ref. [21] of the original manuscript as the relevant content is also covered in Ref. [7] of the original manuscript.
- We made several minor changes in the text and graphics with the aim of increasing clarity and/or readibility.

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