Spin liquid and glass behavior in quantum spin models with all-to-all p-spin interactions

• URL: http://arxiv.org/abs/2508.08154v1
• Date: Mon, 11 Aug 2025 16:30:38 GMT
• Title: Spin liquid and glass behavior in quantum spin models with all-to-all p-spin interactions
• Authors: Shusei Wadashima, Yukitoshi Motome,
• Abstract summary: Spin liquid and spin glass states represent two distinct phases of disordered quantum spin systems.<n>We show that increasing anisotropy in the interactions systematically suppresses the spin liquid phase and extends the spin glass regime.<n>Our findings provide new insights into quantum disordered phases and the transitions between them.
• Score: 0.0
• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: Spin liquid and spin glass states represent two distinct phases of disordered quantum spin systems. These states are, in principle, distinguished by quantum-entangled fluctuations and spin-freezing, but identifying each state and characterizing the transition between them remain challenging. Here, we systematically explore the relationship between the spin liquid and spin glass states using a model with all-to-all random interactions among $p$ spins, which interpolates between the Ising-like one-component, XY-like two-component, and isotropic three-component cases. By analyzing the system-size $N$ dependence of the Edwards-Anderson order parameter and the density of states, we identify the transition from the spin liquid to the spin glass for various values of $p$. We show that the phase diagrams for different $p$ can be unified through a scaling with $N/p^2$, revealing that increasing anisotropy in the interactions systematically suppresses the spin liquid phase and extends the spin glass regime. Furthermore, we examine the competition between multiple-spin interactions and anisotropy under an external magnetic field in the isotropic case, and find that the spin liquid phase transitions into the spin glass phase before entering a quantum paramagnetic phase. Our findings provide new insights into quantum disordered phases and the transitions between them.

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