两个耦合自旋通过不同的伊辛哈密顿量的热力学几何

IF 2.9 3区物理与天体物理 Q2 PHYSICS, MULTIDISCIPLINARY

The European Physical Journal Plus Pub Date : 2025-08-11 DOI:10.1140/epjp/s13360-025-06695-1

Nayyere Einali Saghavaz, Hosein Mohammadzadeh, Zahra Ebadi, Morteza Nattagh Najafi

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引用次数: 0

摘要

我们研究了由不同伊辛哈密顿量控制的两个耦合自旋组成的系统的热力学几何。我们构造了热力学参数空间，并计算了相关的度量元素。此外，我们还分析了这些几何结构如何随系统参数（如耦合常数和外磁场）的变化而变化。基于热力学曲率的符号表明，不同的模型在热力学参数空间中表现出不同的特征。这些见解完善了我们对微观自旋相互作用产生的宏观热力学行为的理解。

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Thermodynamic geometry of two coupled spins via various Ising Hamiltonians

We investigate the thermodynamic geometry of systems composed of two coupled spins governed by different Ising Hamiltonians. We construct the thermodynamic parameters space and evaluate the related metric elements. Moreover, we analyze how these geometric structures change with variations in system parameters, such as coupling constants and external magnetic fields. We show that different models exhibit distinct features in thermodynamic parameters space based on the sign of thermodynamic curvature. These insights refine our understanding of the macroscopic thermodynamic behavior emerging from microscopic spin interactions.

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来源期刊

The European Physical Journal Plus PHYSICS, MULTIDISCIPLINARY-

CiteScore

5.40

自引率

8.80%

发文量

1150

审稿时长

4-8 weeks

期刊介绍： The aims of this peer-reviewed online journal are to distribute and archive all relevant material required to document, assess, validate and reconstruct in detail the body of knowledge in the physical and related sciences. The scope of EPJ Plus encompasses a broad landscape of fields and disciplines in the physical and related sciences - such as covered by the topical EPJ journals and with the explicit addition of geophysics, astrophysics, general relativity and cosmology, mathematical and quantum physics, classical and fluid mechanics, accelerator and medical physics, as well as physics techniques applied to any other topics, including energy, environment and cultural heritage.