Pal, A;
Huse, DA;
(2015)
Many-body localization phase transition.
Physical Review B
, 82
(17)
, Article 174411. 10.1103/physrevb.82.174411.
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Abstract
We use exact diagonalization to explore the many-body localization transition in a random-field spin-1/2 chain. We examine the correlations within each many-body eigenstate, looking at all high-energy states and thus effectively working at infinite temperature. For weak random field the eigenstates are thermal, as expected in this nonlocalized, “ergodic” phase. For strong random field the eigenstates are localized with only shortrange entanglement. We roughly locate the localization transition and examine some of its finite-size scaling, finding that this quantum phase transition at nonzero temperature might be showing infinite-randomness scaling with a dynamic critical exponent z→�.
| Type: | Article |
|---|---|
| Title: | Many-body localization phase transition |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1103/physrevb.82.174411 |
| Publisher version: | http://doi.org/10.1103/physrevb.82.174411 |
| Language: | English |
| Additional information: | This version is the version of record. For information on re-use, please refer to the publisher’s terms and conditions. |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > Dept of Physics and Astronomy |
| URI: | https://discovery.ucl.ac.uk/id/eprint/10084513 |
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