Farey分数自旋链的热力学
Thermodynamics of the Farey Fraction Spin Chain
摘要:
我们考虑Farey分数自旋链,一个一维模型定义(矩阵生成)的Farey分数。通过引入外场$h$,我们扩展了以前对该模型热力学的研究。从严格的和重整化群的论证出发,我们确定了扩展模型的相图和相变行为。我们的结果是完全符合标度理论的情况下,当一个“边际”字段是本),尽管不寻常的性质的过渡h=0。
英文摘要:
We consider the Farey fraction spin chain, a one-dimensional model defined on (the matrices generating) the Farey fractions. We extend previous work on the thermodynamics of this model by introducing an external field $h$. From rigorous and renormalization group arguments, we determine the phase diagram and phase transition behavior of the extended model. Our results are fully consistent with scaling theory (for the case when a "marginal" field is present) despite the unusual nature of the transition for h=0.
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