Giuseppe Carleo, Marco Tarzia, Francesco Zamponi
Published 2009-09-12, updated 2009-11-03Version 2
The role of geometrical frustration in strongly interacting bosonic systems is studied with a combined numerical and analytical approach. We demonstrate the existence of a novel quantum phase featuring both Bose-Einstein condensation and spin-glass behaviour. The differences between such a phase and the otherwise insulating "Bose glasses" are elucidated.
Journal: Physical Review Letters 103, 215302 (2009)
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