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|As Contributors:||Wouter Buijsman|
|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.
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.  of the revised manuscript from the arXiv to the published version, added Ref.  of the revised manuscript, and removed Ref.  of the original manuscript as the relevant content is also covered in Ref.  of the original manuscript.
- We made several minor changes in the text and graphics with the aim of increasing clarity and/or readibility.