Journal
PHYSICAL REVIEW LETTERS
Volume 113, Issue 21, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.113.217201
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Funding
- Collaborative Research Centre [SFB/TR49]
- Graduate School of Excellence MAINZ (DFG, Germany)
- NSERC (Canada)
- Regional Computing Center at the University of Kaiserslautern
- AHRP
- Compute Canada
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We propose to observe many-body localization in cold atomic gases by realizing a Bose-Hubbard chain with binary disorder and studying its nonequilibrium dynamics. In particular, we show that measuring the difference in occupation between even and odd sites, starting from a prepared density-wave state, provides clear signatures of localization. Furthermore, we confirm as hallmarks of the many-body localized phase a logarithmic increase of the entanglement entropy in time and Poissonian level statistics. Our numerical density-matrix renormalization group calculations for infinite system size are based on a purification approach; this allows us to perform the disorder average exactly, thus producing data without any statistical noise and with maximal simulation times of up to a factor 10 longer than in the clean case.
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