期刊
JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN
卷 76, 期 5, 页码 -出版社
PHYSICAL SOC JAPAN
DOI: 10.1143/JPSJ.76.054002
关键词
spin glass; p-spin interaction; random energy model; phase diagram; quantum effects
The phase diagram of the p-spin-interacting spin glass model in a transverse field is investigated in the limit p -> infinity under the presence of ferromagnetic bias. Using the replica method and the static approximation, we show that the phase diagram consists of four phases: Quantum paramagnetic, classical paramagnetic, ferromagnetic, and spin-glass phases. We also show that the static approximation is valid in the ferromagnetic phase in the limit p -> infinity by using the large-p expansion. Since the same approximation is already known to be valid in other phases, we conclude that the obtained phase diagram is exact.
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