Abstract
We investigate the superfluid-insulator quantum phase transition of one-dimensional bosons with off-diagonal disorder by means of large-scale Monte Carlo simulations. For weak disorder, we find the transition to be in the same universality class as the superfluid-Mott insulator transition of the clean system. The nature of the transition changes for stronger disorder. Beyond a critical disorder strength, we find nonuniversal, disorder-dependent critical behavior. We compare our results to recent perturbative and strong-disorder renormalization group predictions. We also discuss experimental implications as well as extensions of our results to other systems.
Recommended Citation
F. Hrahsheh and T. Vojta, "Disordered Bosons in One Dimension: From Weak- to Strong-Randomness Criticality," Physical Review Letters, vol. 109, no. 26, American Physical Society (APS), Dec 2012.
The definitive version is available at https://doi.org/10.1103/PhysRevLett.109.265303
Department(s)
Physics
Keywords and Phrases
Clean systems; Critical behavior; Disorder strength; Monte Carlo Simulation; Off-diagonal disorder; One dimension; One-dimensional bosons; Renormalization-group predictions; Superfluid-insulator quantum phase transition; Superfluid-Mott-insulator transition; Universality class; Weak disorder; Phase transitions; Statistical mechanics; Bosons
International Standard Serial Number (ISSN)
0031-9007
Document Type
Article - Journal
Document Version
Final Version
File Type
text
Language(s)
English
Rights
© 2012 American Physical Society (APS), All rights reserved.
Publication Date
01 Dec 2012
