Color-dependent interactions in the three coloring model

Article

关键词: PACKED LOOP MODEL;    HEXAGONAL LATTICE;    KAGOME;    CRITICALITY;    TRANSITION;    DYNAMICS;    SYSTEM;    GLASS;   

DOI  :  10.1103/PhysRevB.98.024403

来源: SCIE

【 摘 要 】

Since it was first discussed by Baxter in 1970, the three coloring model has been studied in several contexts, from frustrated magnetism to superconducting devices and glassiness. In presence of interactions, when the model is no longer exactly soluble, it was already observed that the phase diagram is highly nontrivial. Here we discuss the generic case of color-dependent nearest-neighbor interactions between the vertex chiralities. We uncover different critical regimes merging into one another: c = 1/2 free fermions combining into c = 1 free bosons; c = 1 free bosons combining into c = 2 critical loop models; as well as three separate c = 1/2 critical lines merging at a supersymmetric c = 3/2 critical point. When the three coupling constants are tuned to equal one another, transfermatrix calculations highlight a puzzling regime where the central charge appears to vary continuously from 3/2 to 2.

【 授权许可】

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