Statistical transmutation in doped quantum dimer models

Details Statistical transmutation in doped quantum dimer models Statistical transmutation in doped quantum dimer models

2012-02-16

arxiv.org/abs/1202.3618v1

Physics

Condensed Matter

Strongly Correlated Electrons

3 figures

Scientific paper

We prove a "statistical transmutation" symmetry of doped quantum dimer models on the square, triangular and kagome lattices: the energy spectrum is invariant under a simultaneous change of statistics (i.e. bosonic into fermionic or vice-versa) of the holes and of the signs of all the dimer resonance loops. This exact transformation enables to define duality equivalence between doped quantum dimer Hamiltonians, and provides the analytic framework to analyze dynamical statistical transmutations. We investigate numerically the doping of the triangular quantum dimer model, with special focus on the topological Z2 dimer liquid. Doping leads to four (instead of two for the square lattice) inequivalent families of Hamiltonians. Competition between phase separation, superfluidity, supersolidity and fermionic phases is investigated in the four families.

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