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arXiv · 1101.2600

Phase diagram of soft-core bosons in two dimensions

S. Saccani·S. Moroni·M. Boninsegni
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Abstract

The low temperature phase diagram of Bose soft disks in two dimensions is studied by numerical simulations. It is shown that a supersolid cluster phase exists, within a range of the model parameters, analogous to that recently observed for a system of aligned dipoles interacting via a softened potential at short distance. These findings indicate that a long-range tail of the interaction is unneeded to obtain such a phase, and that the soft-core repulsive interaction is the minimal model for supersolidity.

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S. Saccani, S. Moroni, M. Boninsegni. 2011-01-13. Phase diagram of soft-core bosons in two dimensions. https://doi.org/10.1103/physrevb.83.092506

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