Self-adjointness of some infinite-dimensional elliptic operators and application to stochastic quantization

Self-adjointness of some infinite-dimensional elliptic operators and application to stochastic quantization
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一些无限维椭圆算子的自共轭性及其在随机量化中的应用

DOI:
10.1007/pl00008739
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发表时间:
2000
影响因子:
2
通讯作者:
L. Tubaro
L. Tubaro
中科院分区:
数学1区
文献类型:
--
作者:
G. Prato;L. Tubaro

文献摘要

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我们考虑Hilbert空间H中的算子K <$$>=L <$−:<CDU(x),D <$>,其中L是Ornstein-Uhlenbeck算子,U∈ W 1,4(H,μ),μ是与L相关的不变测度.我们证明了K_∞在空间L_2(H,ν)中本质上是自伴的,其中ν是吉布斯测度ν(dx)=Z-:1 e-:2U(x)dx.给出了随机量子化的一个应用。
We consider an operatorK˚ϕ =Lϕ−: <CDU(x),Dϕ> in a Hilbert spaceH, whereLis an Ornstein–Uhlenbeck operator,U∈W1,4(H, μ) and μ is the invariant measure associated withL. We show thatK˚is essentially self-adjoint in the spaceL2(H, ν) where ν is the “Gibbs” measure ν(dx) =Z−:1e−:2U(x)dx. An application to Stochastic quantization is given.