- Delocalization of Weakly Interacting Bosons in a 1D Quasiperiodic Potential
- Physical Review Letters
- Volume | Issue number
- 113 | 4
- Article number
- Number of pages
- Document type
- Faculty of Science (FNWI)
- Van der Waals-Zeeman Institute (WZI)
Institute of Physics (IoP)
We consider weakly interacting bosons in a 1D quasiperiodic potential (Aubry-Azbel-Harper model) in the regime where all single-particle states are localized. We show that the interparticle interaction may lead to the many-body delocalization and we obtain the finite-temperature phase diagram. Counterintuitively, in a wide range of parameters the delocalization requires stronger coupling as the temperature increases. This means that the system of bosons can undergo a transition from a fluid to insulator (glass) state under heating.
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- © 2014 American Physical Society. - With supplemental material
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