Superglass phase of interacting bosons

Authors

Ka Ming Tam, University of Waterloo
Scott Geraedts, University of Waterloo
Stephen Inglis, University of Waterloo
Michel J.P. Gingras, University of Waterloo
Roger G. Melko, University of Waterloo

Document Type

Article

Publication Date

5-25-2010

Abstract

We introduce a Bose-Hubbard Hamiltonian with random disordered interactions as a model to study the interplay of superfluidity and glassiness in a system of three-dimensional hard-core bosons at half-filling. Solving the model using large-scale quantum Monte Carlo simulations, we show that these disordered interactions promote a stable superglass phase, where superflow and glassy density localization coexist in equilibrium without exhibiting phase separation. The robustness of the superglass phase is underlined by its existence in a replica mean-field calculation on the infinite-dimensional Hamiltonian. © 2010 The American Physical Society.

Publication Source (Journal or Book title)

Physical Review Letters

Recommended Citation

Tam, K., Geraedts, S., Inglis, S., Gingras, M., & Melko, R. (2010). Superglass phase of interacting bosons. Physical Review Letters, 104 (21) https://doi.org/10.1103/PhysRevLett.104.215301