Deconfined Criticality Flow in the Heisenberg Model with Ring-Exchange Interactions

Date: 2013-05-03
Authors Kun Chen, Yuan Huang, Youjin Deng, A. B. Kuklov, N. V. Prokof’ev, and B. V. Svistunov
Journal No. Phys. Rev. Lett. 110, 185701 (2013)
Abstract Quantum transition points in the J-Q model—the test bed of the deconfined critical point theory—and the SU(2)-symmetric discrete noncompact CP1 representation of the deconfined critical action are directly compared by the flowgram method. We find that the flows of two systems coincide in a broad region of linear system sizes (10