Dresden 2006 – scientific programme
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TT: Tiefe Temperaturen
TT 16: Solids At Low Temperature: Quantum Liquids, Bose-Einstein Condensates, Ultra-cold Atoms, ...
TT 16.2: Talk
Tuesday, March 28, 2006, 09:45–10:00, HSZ 105
Supersolid Bosons on the Triangular Lattice — •Stefan Wessel1 and Matthias Troyer2 — 1Institut für Theoretische Physik III, Universität Stuttgart, 70550 Stuttgart, Germany — 2Theoretische Physik, ETH Zürich, CH-8093 Zürich, Switzerland
The zero temperature phase diagram of hardcore bosons on the triangular lattice with nearest neighbor repulsion is determined using quantum Monte Carlo simulations. The system exhibits an extended supersolid phase emerging from an order-by-disorder effect as a novel way of a quantum system to avoid classical frustration. We analyze the nature of the supersolid phase and its stability in competition with phase-separation, which we find to occurs in other regions of parameter space.