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arXiv 2104.06345math.PR
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外场作用下混合$p$ -自旋球哈密顿量几何的平凡性

Triviality of the geometry of mixed $p$-spin spherical Hamiltonians with external field

David Belius, Jiří Černý, Shuta Nakajima, Marius Schmidt

摘要:

本文研究了高维球上各向同性高斯随机场,其中增加了一个确定性线性项,也称为外场混合p自旋哈密顿量。我们证明了如果外场足够强,则所得函数具有平凡几何,即只有两个临界点。这与没有或弱外部场的情况形成对比,其中这些函数通常具有指数数量的临界点。我们给出了一个明确的阈值$h_c$的外部字段必要的平凡化和猜想$h_c$是尖锐的大小。Kac-Rice公式是我们的主要工具。我们的工作扩展了[Fyo 15],它确定了具有随机外场的纯p自旋哈密顿量的特殊情况下的平凡区域。

英文摘要:

We study isotropic Gaussian random fields on the high-dimensional sphere with an added deterministic linear term, also known as mixed p-spin Hamiltonians with external field. We prove that if the external field is sufficiently strong, then the resulting function has trivial geometry, that is only two critical points. This contrasts with the situation of no or weak external field where these functions typically have an exponential number of critical points. We give an explicit threshold $h_c$ for the magnitude of the external fieldnecessary for trivialization and conjecture $h_c$ to be sharp. The Kac-Rice formula is our main tool. Our work extends [Fyo15], which identified the trivial regime for the special case of pure p-spin Hamiltonians with random external field.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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