Mobility edge of the two-dimensional Bose-Hubbard model
We analyze the disorder-driven localization of the two-dimensional Bose-Hubbard model by evaluating the full low-energy quasiparticle spectrum via a recently developed fluctuation operator expansion method. For any strength of the local interaction we find a mobility edge that displays an approximat...
Main Authors: | Andreas Geißler, Guido Pupillo |
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Format: | Article |
Language: | English |
Published: |
American Physical Society
2020-12-01
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Series: | Physical Review Research |
Online Access: | http://doi.org/10.1103/PhysRevResearch.2.042037 |
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