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arXiv 2609.07612hep-thcond-mat.stat-mech

大规模Kramers-Wannier界面处的精确自旋形状因子与关联函数

Exact spin form factors and correlations at a massive Kramers-Wannier interface

  • HUN-REN Wigner Research Centre for Physics(匈牙利科学院维格纳物理研究中心)
  • Institute of Theoretical Physics and Mark Kac Center for Complex, Systems Research, Jagiellonian University(雅盖隆大学理论物理研究所及马克·卡克复杂系统研究中心)

机构由 AI 辅助整理,请以论文原文为准。

Zoltan Bajnok, Yizhuang Liu

AI总结:

本文通过两种互补晶格实现,精确计算了标度Ising模型中大规模Kramers-Wannier界面的自旋形状因子和关联函数,并用缺陷TCSA和费米子自旋链验证了结果。

AI中文摘要:

我们确定了标度Ising模型中分离有序相和无序相的大规模Kramers-Wannier界面的精确有限体积自旋形状因子和两点关联函数。该界面具有两种互补的晶格实现:一种是自对偶非均匀Ising链,其连续极限具有变号Majorana质量分布;另一种是在交换欧几里得时空后,可采用Toeplitz/Fredholm方法处理的混合热平均。结合这两种描述,我们获得了精确的Neveu-Schwarz-Ramond自旋矩阵元以及界面关联函数的因式化Fredholm行列式。缺陷TCSA和独立的费米子自旋链计算证实了预测的谱和矩阵元。

英文摘要:

We determine exact finite-volume spin form factors and two-point correlations for a massive Kramer--Wannier interface in the scaling Ising model, separating ordered and disordered phases. The interface admits two complementary lattice realizations: a self-dual inhomogeneous Ising chain whose continuum limit has a sign-changing Majorana mass profile, and, after exchanging Euclidean space and time, a mixed thermal average amenable to Toeplitz/Fredholm methods. Combining these descriptions, we obtain the exact Neveu-Schwarz-Ramond spin matrix elements and a factorized Fredholm determinant for the interface correlator. Defect TCSA and independent fermionic spin-chain calculations confirm the predicted spectrum and matrix elements.

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