具有三体相互作用的非贝尔铁磁体

IF 2.8 3区物理与天体物理 Q2 PHYSICS, PARTICLES & FIELDS

Nuclear Physics B Pub Date : 2025-09-01 DOI:10.1016/j.nuclphysb.2025.117094

Alexios P. Polychronakos , Konstantinos Sfetsos

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引用次数: 0

摘要

我们研究了由原子组成的SU(N)基本表示和与二体和三体相互作用的非abel铁磁体的热力学。使用平均场方法，我们揭示了一个复杂的相结构，这取决于相对强度和两体和三体耦合常数的符号。在两体相互作用为铁磁性而三体相互作用为反铁磁性的情况下，我们发现了丰富的相变级联，具有两个不同极化方向的相的出现是最引人注目的新特征。我们的结果与磁性系统有关，其中高层体相互作用不能被忽视。

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Nonabelian ferromagnets with three-body interactions

We study the thermodynamics of nonabelian ferromagnets consisting of atoms in the fundamental representation of

S U (N)

and interacting with two-body and three-body interactions. Using a mean field approach, we uncover an intricate phase structure, depending on the relative strength and sign of the two-body and three-body coupling constants. In the case where two-body interactions are ferromagnetic and three-body ones are antiferromagnetic, we uncover a rich cascade of phase transitions, the appearance of phases with two distinct polarization directions being the most striking novel feature. Our results are relevant to magnetic systems where higher-body interactions cannot be neglected.

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来源期刊

Nuclear Physics B 物理-物理：粒子与场物理

CiteScore

5.50

自引率

7.10%

发文量

302

审稿时长

1 months

期刊介绍： Nuclear Physics B focuses on the domain of high energy physics, quantum field theory, statistical systems, and mathematical physics, and includes four main sections: high energy physics - phenomenology, high energy physics - theory, high energy physics - experiment, and quantum field theory, statistical systems, and mathematical physics. The emphasis is on original research papers (Frontiers Articles or Full Length Articles), but Review Articles are also welcome.