Comparin Kapfer Krauth 2014

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'''''Liquid-solid transitions in the three-body hard-core model''''' '''EPL 109 2003 (2015)''' '''''Liquid-solid transitions in the three-body hard-core model''''' '''EPL 109 2003 (2015)'''
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'''Abstract''' '''Abstract'''
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[http://iopscience.iop.org/0295-5075/109/2/20003 Published version (subscription needed)] [http://iopscience.iop.org/0295-5075/109/2/20003 Published version (subscription needed)]
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T. Comparin, S. C. Kapfer, W. Krauth Liquid-solid transitions in the three-body hard-core model EPL 109 2003 (2015)

Paper

Abstract We determine the phase diagram for a generalisation of two-and three-dimensional hard spheres: a classical system with three-body interactions realised as a hard cut-off on the mean-square distance for each triplet of particles. Quantum versions of this model are important in the context of the unitary Bose gas, which is currently under close theoretical and experimental scrutiny. In two dimensions, the three-body hard-core model possesses a conventional atomic liquid phase and a peculiar solid phase formed by dimers. These dimers interact effectively as hard disks. In three dimensions, the solid phase consists of isolated atoms that arrange in a simple-hexagonal lattice.

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