Gibbs states on random configurations

Gibbs states on random configurations
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吉布斯关于随机配置的陈述

DOI:
10.1063/1.4891992
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发表时间:
2013
影响因子:
1.3
通讯作者:
Tanja Pasurek
Tanja Pasurek
中科院分区:
物理与天体物理3区
文献类型:
--
作者:
A. Daletskii;Y. Kondratiev;Y. Kozitsky;Tanja Pasurek

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研究了单自旋空间 S=Rm 和无界对相互作用的自旋系统的吉布斯态。自旋附加到 Rn 中随机点过程的实现 γ 的点。在模型参数的某些条件下,我们证明,对于几乎所有 γ,所有吉布斯状态的集合 G(Sγ) 都是非空的,并且其元素具有支持属性,如论文中明确描述的。我们还证明了可测量选择 γ↦νγεG(Sγ)(随机吉布斯测量)的存在,并推导了相应的平均矩估计。
Gibbs states of a spin system with the single-spin space S=Rm and unbounded pair interactions are studied. The spins are attached to the points of a realization γ of a random point process in Rn. Under certain conditions on the model parameters we prove that, for almost all γ, the set G(Sγ) of all Gibbs states is nonempty and its elements have support properties, explicitly described in the paper. We also show the existence of measurable selections γ↦νγ∈G(Sγ) (random Gibbs measures) and derive the corresponding averaged moment estimates.