Disorder-induced superfluidity

Long Dang; Massimo Boninsegni; Lode Pollet

doi:10.1103/physrevb.79.214529

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arXiv · 0812.3417

Disorder-induced superfluidity

Long Dang·Massimo Boninsegni·Lode Pollet

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Abstract

We use quantum Monte Carlo simulations to study the phase diagram of hard-core bosons with short-ranged {\it attractive} interactions, in the presence of uniform diagonal disorder. It is shown that moderate disorder stabilizes a glassy superfluid phase in a range of values of the attractive interaction for which the system is a Mott insulator, in the absence of disorder. A transition to an insulating Bose glass phase occurs as the strength of the disorder or interactions increases.

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Long Dang, Massimo Boninsegni, Lode Pollet. 2009-06-26. Disorder-induced superfluidity. https://doi.org/10.1103/physrevb.79.214529

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