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Observation of many-body localization of interacting fermions in a quasi-random optical lattice
- Source :
- Science 349, 842 (2015)
- Publication Year :
- 2015
-
Abstract
- We experimentally observe many-body localization of interacting fermions in a one-dimensional quasi-random optical lattice. We identify the many-body localization transition through the relaxation dynamics of an initially-prepared charge density wave. For sufficiently weak disorder the time evolution appears ergodic and thermalizing, erasing all remnants of the initial order. In contrast, above a critical disorder strength a significant portion of the initial ordering persists, thereby serving as an effective order parameter for localization. The stationary density wave order and the critical disorder value show a distinctive dependence on the interaction strength, in agreement with numerical simulations. We connect this dependence to the ubiquitous logarithmic growth of entanglement entropy characterizing the generic many-body localized phase.<br />Comment: 6 pages, 6 figures + supplementary information
Details
- Database :
- arXiv
- Journal :
- Science 349, 842 (2015)
- Publication Type :
- Report
- Accession number :
- edsarx.1501.05661
- Document Type :
- Working Paper
- Full Text :
- https://doi.org/10.1126/science.aaa7432