相互作用玻色子的超玻璃相
A Superglass Phase of Interacting Bosons
摘要：
我们引入了一个具有随机无序相互作用的玻色-哈伯德哈密顿量作为模型，研究了三维硬核玻色子系统在半填充时超流性和玻璃性的相互作用。使用大规模的量子蒙特卡罗模拟求解模型，我们表明，这些无序的相互作用促进了一个稳定的超玻璃相，超流和玻璃密度本地化共存的平衡，而不表现出相分离。超玻璃相的鲁棒性是强调其存在的副本平均场计算的无限维哈密顿量。
英文摘要：
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.
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