Many-body localization in the Fock space of natural orbitals
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 wh...
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| Format: | Article |
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2018-06-01
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| Series: | SciPost Physics |
| Online Access: | https://scipost.org/SciPostPhys.4.6.038 |
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doaj-9b3a356f891f42fbaccef18a09ead2032020-11-24T20:41:41ZengSciPostSciPost Physics2542-46532018-06-014603810.21468/SciPostPhys.4.6.038Many-body localization in the Fock space of natural orbitalsWouter Buijsman, Vladimir Gritsev, Vadim CheianovWe 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.https://scipost.org/SciPostPhys.4.6.038 |
| collection |
DOAJ |
| language |
English |
| format |
Article |
| sources |
DOAJ |
| author |
Wouter Buijsman, Vladimir Gritsev, Vadim Cheianov |
| spellingShingle |
Wouter Buijsman, Vladimir Gritsev, Vadim Cheianov Many-body localization in the Fock space of natural orbitals SciPost Physics |
| author_facet |
Wouter Buijsman, Vladimir Gritsev, Vadim Cheianov |
| author_sort |
Wouter Buijsman, Vladimir Gritsev, Vadim Cheianov |
| title |
Many-body localization in the Fock space of natural orbitals |
| title_short |
Many-body localization in the Fock space of natural orbitals |
| title_full |
Many-body localization in the Fock space of natural orbitals |
| title_fullStr |
Many-body localization in the Fock space of natural orbitals |
| title_full_unstemmed |
Many-body localization in the Fock space of natural orbitals |
| title_sort |
many-body localization in the fock space of natural orbitals |
| publisher |
SciPost |
| series |
SciPost Physics |
| issn |
2542-4653 |
| publishDate |
2018-06-01 |
| description |
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. |
| url |
https://scipost.org/SciPostPhys.4.6.038 |
| work_keys_str_mv |
AT wouterbuijsmanvladimirgritsevvadimcheianov manybodylocalizationinthefockspaceofnaturalorbitals |
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1716824224351387648 |