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Observation of subdiffusion of a disordered interacting system
- Source :
- Phys. Rev. Lett. 106, 230403 (2011)
- Publication Year :
- 2010
-
Abstract
- We study the transport dynamics of matter-waves in the presence of disorder and nonlinearity. An atomic Bose-Einstein condensate that is localized in a quasiperiodic lattice in the absence of atom-atom interaction shows instead a slow expansion with a subdiffusive behavior when a controlled repulsive interaction is added. The measured features of the subdiffusion are compared to numerical simulations and a heuristic model. The observations confirm the nature of subdiffusion as interaction-assisted hopping between localized states and highlight a role of the spatial correlation of the disorder.<br />Comment: 8 pages, to be published on Physical Review Letters
Details
- Database :
- arXiv
- Journal :
- Phys. Rev. Lett. 106, 230403 (2011)
- Publication Type :
- Report
- Accession number :
- edsarx.1011.2362
- Document Type :
- Working Paper
- Full Text :
- https://doi.org/10.1103/PhysRevLett.106.230403