Physics Letters A

Phase diagrams of the quantum Sherrington-Kirkpatrick Ising spin glass in a transverse field

Yu‐qiang Ma, Zhen‐Ya Li

Published Aug 1, 1990• 13 citations

DOI: 10.1016/0375-9601(90)90593-d

Related papers

The Sherrington-Kirkpatrick Ising spin glass in a transverse field: Stability analysis and breaking of the replica symmetry

G. Büttner, Klaus D. Usadel

Physica B Condensed MatterAug 1, 19903 citations

Instability in the quantum Sherrington-Kirkpatrick Ising spin glass with a transverse and a trimodal random longitudinal field

Yu‐qiang Ma, Zhen‐Ya Li

Journal of Magnetism and Magnetic MaterialsJun 1, 19910 citations

Monte Carlo Study of the Sherrington-Kirkpatrick Spin Glass Model in a Transverse Field

H. Ishii, Tetsuya Yamamoto

Springer series in solid-state sciencesJan 1, 19871 citation

Phase diagram of the quantum Ising spin glass in a transverse field

Klaus D. Usadel, G. Büttner, T. K. Kopeć

A recent calculation of Yokota on the phase boundary for the Sherrington-Kirkpatrick version of the quantum Ising spin glass in a transverse field seems to lead to unphysical results. Various other approaches on this subject are quoted and compared with the exact Trotter-Suzuki method to resolve the controversies about the critical line in this model.

Physical review. B, Condensed matterDec 1, 199122 citations

Quantum spin glasses in the Ising model with a transverse field

Ya. V. Fedorov, E. F. Shender

ZhETF Pisma RedaktsiiuJun 1, 19862 citations

Correlations in the Trotter dimension in the transverse Ising spin-glass model

Ferenc Pázmándi, Zbigniew Domański, Paul Erdös

The nature of the paramagnetic phase of the transverse Sherrington-Kirkpatrick (SK) spin-glass model is not completely understood because of the quantum fluctuations. We use different approximations to describe these fluctuations. The resulting paramagnetic--spin-glass phase diagrams are compared to those obtained by numerical methods and by previous theories.

Physical review. B, Condensed matterApr 1, 19937 citations