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Title: Statistics of Holes and Nature of Superfluid Phases in Quantum Dimer Models
Originating Office: IAS
Speaker: Oshikawa, Masaki
Issue Date: 18-Dec-2012
Event Date: 18-Dec-2012
Group/Series/Folder: Record Group 8.15 - Institute for Advanced Study
Series 3 - Audio-visual Materials
Location: 8.15:3 box 1.8
Notes: IAS Symposium on Frontiers in Condensed Matter Physics. Talk no. 11
Title from title slide.
Abstract: Quantum Dimer Models (QDM) arise as low energy effective models for frustrated magnets and host exotic spin liquid phases with deconfined spinons. The talk consider doping of holes into the spin liquid phases of the QDM. A fundamental issue is the possible existence of a superconducting phase in such systems and its properties. For this purpose, the question of the statistics of the mobile holes (or 'holons') shall be addressed first. The speaker prove general 'statistical transmutation' symmetry of such doped QDM by using composite operators of dimers and holes. This exact transformation enables one to define duality equivalence classes (or families) of doped QDM, and provides the analytic framework to analyze dynamical statistical transmutations. The talk discuss various possible superconducting phases of the system. In particular, the possibility of an exotic superconducting phase originating from the condensation of (bosonic) charge-e holons is examined. A nume! rical evidence of such a superconducting phase, based on a novel gauge-invariant holon Green's function, is presented in the case of the QDM on a triangular lattice.
Duration: 36 min.
Appears in Series:8.15:3 - Audio-visual Materials
Videos for Public -- Distinguished Lectures