Interfaces, strings, and a soft mode in the square lattice quantum dimer model

Banerjee, Debasish; Bögli, Michael; Hofmann, C. P.; Jiang, F.-J.; Widmer, Philippe; Wiese, Uwe-Jens (2014). Interfaces, strings, and a soft mode in the square lattice quantum dimer model. Physical review. B - condensed matter and materials physics, 90(24) American Physical Society 10.1103/PhysRevB.90.245143

Text PhysRevB.90_245143.pdf - Published Version Restricted to registered users only Available under License Publisher holds Copyright. Download (1MB)

The quantum dimer model on the square lattice is a U(1) gauge theory that addresses aspects of the physics of high-Tc superconductors. Using a quantum Monte Carlo method, we show that the theory exists in a confining columnar valence bond solid phase. The interfaces separating distinct columnar phases display plaquette order, which, however, is not realized as a bulk phase. Static “electric” charges are confined by flux tubes that consist of multiple strands, each carrying a fractionalized flux ¼. A soft pseudo-Goldstone mode (which becomes exactly massless at the Rokhsar-Kivelson point) extends deep into the columnar phase, with potential implications for high-Tc physics.

Interest & Impact

Downloads

6 since deposited on 09 Jan 2015
0 in the past 12 months

Citations

5 Citations in Web of Science ®
6 Citations in Scopus

Search

in Google Scholar™

Services

Actions (login required)

Edit item

Actions (login required)

Edit item