对称Potts模型的重建
Reconstruction of symmetric Potts Models
摘要:
树的重建问题已经在统计物理学、信息论和计算生物学等领域得到了广泛的研究。然而,仅在少数模型中建立了严格的重建阈值。我们证明了第一个精确的重建阈值在非二进制模型建立Kesten-Stigum界的3状态Potts模型的正则树的大程度。进一步证明了当$q$.此外,我们确定重建阈值的渐近性。
英文摘要:
The reconstruction problem on the tree has been studied in numerous contexts including statistical physics, information theory and computational biology. However, rigorous reconstruction thresholds have only been established in a small number of models. We prove the first exact reconstruction threshold in a non-binary model establishing the Kesten-Stigum bound for the 3-state Potts model on regular trees of large degree. We further establish that the Kesten-Stigum bound is not tight for the $q$-state Potts model when $q \geq 5$. Moreover, we determine asymptotics for the reconstruction thresholds.
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