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arXiv · 0807.4534

Unconventional quantum phases of lattice bosonic mixtures

P. Buonsante·S. M. Giampaolo·F. Illuminati·V. Penna·A. Vezzani
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Abstract

We consider strongly interacting boson-boson mixtures on one-dimensional lattices and, by adopting a qualitative mean-field approach, investigate their quantum phases as the interspecies repulsion is increased. In particular, we analyze the low-energy "quantum emulsion" metastable states occurring at large values of the interspecies interaction, which are expected to prevent the system from reaching its true ground state. We argue a significant decrease in the visibility of the time-of-flight images in the case of these spontaneously disordered states.

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P. Buonsante, S. M. Giampaolo, F. Illuminati, V. Penna, A. Vezzani. 2009-02-02. Unconventional quantum phases of lattice bosonic mixtures. https://doi.org/10.1140/epjb/e2009-00056-0

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