Local entanglement and confinement transitions in the random transverse-field Ising model on the pyrochlore lattice

Article

关键词: SPIN;    BEHAVIOR;    ENTROPY;    POINT;    STATE;   

DOI  :  10.1103/PhysRevB.100.144437

来源: SCIE

【 摘 要 】

We use numerical linked cluster expansions (NLC) and exact diagonalization to study confinement transitions out of the quantum spin liquid phase in the pyrochlore-lattice Ising antiferromagnet with random transverse fields. We calculate entanglement entropies associated with local regions defined by single tetrahedron to observe these transitions. The randomness-induced confinement transition is marked by a sharp reduction in the local entanglement and a concomitant increase in Ising correlations. In NLC, it is studied through the destruction of loop resonances due to random transverse-fields. The confining phase is characterized by a distribution of local entanglement entropies, which persists to large random fields.

【 授权许可】

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