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arXiv 1809.02191math-phcond-mat.stat-mechhep-thmath.MP
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二维临界$Q$态Potts模型中几何四点函数的Bootstrap方法:$s$通道谱的研究

Bootstrap approach to geometrical four-point functions in the two-dimensional critical $Q$-state Potts model: A study of the $s$-channel spectra

Jesper Lykke Jacobsen, Hubert Saleur

摘要:

本文重新讨论了二维$Q$态Potts模型共形场论的Fortuin-Kasteleyn团簇表示中的连通性关联问题。在最近的工作[M。皮科Ribault和R. Santachiara,SciPost Phys.1,009(2016); arXiv:1607.07224],基于自举方法,结合不同融合通道中光谱的简单示意图,获得了四点函数的结果。在本文中,我们使用晶格代数的考虑,结合广泛的数值研究的相关性无限圆柱体上测试这些acquitures。我们发现,在标度极限的频谱比在[arXiv:1607.07224]中提出的丰富得多:它们涉及在特定领域的共形权重$h_{r,s}$,其中$r$是密集的实轴。

英文摘要:

We revisit in this paper the problem of connectivity correlations in the Fortuin-Kasteleyn cluster representation of the two-dimensional $Q$-state Potts model conformal field theory. In a recent work [M. Picco, S. Ribault and R. Santachiara, SciPost Phys. 1, 009 (2016); arXiv:1607.07224], results for the four-point functions were obtained, based on the bootstrap approach, combined with simple conjectures for the spectra in the different fusion channels. In this paper, we test these conjectures using lattice algebraic considerations combined with extensive numerical studies of correlations on infinite cylinders. We find that the spectra in the scaling limit are much richer than those proposed in [arXiv:1607.07224]: they involve in particular fields with conformal weight $h_{r,s}$ where $r$ is dense on the real axis.

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