Stationary measures of stochastic gradient systems, infinite lattice models

Stationary measures of stochastic gradient systems, infinite lattice models
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随机梯度系统的平稳测量、无限格模型

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发表时间:
1982
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通讯作者:
J. Fritz
J. Fritz
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作者:
J. Fritz

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设G是与相互作用势U相关联的d维随机梯度系统的形式生成元。如果对于G <$IL 1(μ)的光滑ε,<$G <$d μ= 0,则某些矩条件意味着μ是U的Gibbs随机场。如果U满足一个稳定性条件,且d ∈ 2或μ是平移不变的,则这些矩条件可以用自然支撑条件代替。将霍利和Stroock [6]的结果推广到某些无界自旋系统。
SummaryLet G be the formal generator of a d-dimensional stochastic gradient system associated to an interaction potential U. If ∫ G ϕ d μ= 0 for such smooth ϕ that G ϕ IL1(μ), then certain moment conditions imply that μ is a Gibbs random field for U. If U satisfies a stability condition, and d≦2 or μ is translation invariant, then these moment conditions can be replaced by a natural support condition. Results of Holley and Stroock [6] are extended to certain unbounded spin systems.