发表机构
Universidad de Burgos; Universidad de Zaragoza(布尔戈斯大学; 萨拉戈萨大学)
机构由 AI 辅助整理,请以论文原文为准。AI 中文总结
本文研究了自旋-1 的 Kittel--Shore 模型的 $q$-变形,分析了变形参数对热力学性质(比热、磁化率、磁化强度)和相变的影响,并进行了有限尺寸标度分析,与未变形模型对比揭示了 $q$-变形的物理效应。
AI 中文摘要
量子代数($q$-代数)在文献中已被用于变形自旋链模型。特别是,在作者之前的工作中,Kittel--Shore 哈密顿量通过 $\u0073\u0075_q(2)$ 代数进行了变形。该变形哈密顿量针对一般自旋提出,并研究了自旋-1/2 粒子的热力学性质。在本文中,我们关注自旋-1 系统的 Kittel--Shore 模型的 $q$-变形。我们分析了这种变形对系统热力学性质和相变的影响,作为变形参数 $q$ 的函数。具体来说,我们研究了比热、磁化率和磁化强度,包括对表征铁磁相的居里温度的详细分析。此外,对铁磁和反铁磁两种情况都进行了有限尺寸标度分析。结果与未变形模型的结果进行了系统比较,以揭示 $q$-变形的物理效应。
英文摘要
Quantum algebras ($q$-algebras) have been used in the literature to deform spin-chain models. In particular, in previous works by the present authors, the Kittel--Shore Hamiltonian was deformed using $\mathfrak{su}_q(2)$ algebra. The deformed Hamiltonian was presented for a general spin, and the thermodynamic properties were studied for spin-1/2 particles. In this paper, we focus on the $q$-deformation of the Kittel--Shore model for spin-1 systems. We analyse the impact of this deformation on the thermodynamic properties and phase transitions of the system as a function of the deformation parameter $q$. Specifically, we study the specific heat, magnetic susceptibility, and magnetisation, including a detailed analysis of the Curie temperature characterising the ferromagnetic phase. Furthermore, a finite-size scaling analysis is conducted for both the ferromagnetic and antiferromagnetic cases. Results are systematically compared with those of the undeformed model to reveal the physical effects of the $q$-deformation.
Comments47 pages, 51 figures