Berlin 2015 – wissenschaftliches Programm

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TT: Fachverband Tiefe Temperaturen

TT 55: Low-Dimensional Systems: 2D – Theory

TT 55.3: Vortrag

Mittwoch, 18. März 2015, 10:00–10:15, H 3010

Phase diagram of an extended quantum dimer model on the hexagonal lattice — Thiago Milanetto Schlittler¹, •Thomas Barthel², Grégoire Misguich³, Julien Vidal¹, and Rémy Mosseri¹ — ¹LPTMC, Université Paris-6 — ²LPTMS, Université Paris-Sud — ³IPhT, CEA Saclay

We introduce a generalized quantum dimer model on the hexagonal lattice. In addition to the standard Rokhsar-Kivelson Hamiltonian, it contains a competing potential term. The phase diagram is studied by means of quantum Monte-Carlo simulations, variational ansätze and perturbation theory. The model displays a rich phase diagram and, in particular, provides a microscopic realization for the Cantor deconfinement scenario – a cascade of phases with varying flux.