Properties of holons in the Quantum Dimer Model
Résumé
I introduce a doped two-dimensional quantum dimer model describing a doped Mott insulator and retaining the original Fermi statistics. This model shows a rich phase diagram including a d-wave hole-pair superconductor breaking translation symmetry (supersolid) at small doping, a bosonic superfluid at large doping and an exotic intermediate phase in-between. The hole kinetic energy is shown to favor binding of topological defects to the fermionic holons turning them into bosons, in agreement with arguments based on RVB wave-functions. Results are discussed in the context of cuprates superconductors.