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arXiv math/0309356math.PR
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自相互作用扩散:对称相互作用

Self-Interacting Diffusions : Symmetric Interactions

Michel Benaim, Olivier Raimond

摘要:

设$M$是紧致黎曼流形. $M$上的{ \em自相互作用扩散}是$$dX_t = dW_t(X_t) - \frac{1}{t}(\int_0^t \nabla V_{X_s}(X_t)ds)dt$$的随机过程解,其中$\{W_t\}$是$M$上的布朗向量场,$V_x(y) = V(x,y)$是光滑函数。令$μ_t = \frac{1}{t} \int_0^t δ_{X_s} ds$表示$X_t$的归一化占用度量。我们证明了,当$V$是对称的,$μ_t$几乎必然收敛到某一非线性自由能泛函$J$的临界集。此外,$J$一般具有许多临界点,并且$μ_t$几乎肯定地收敛到$J.$的局部最小值。每个局部最小值具有被选择的正概率。

英文摘要:

Let $M$ be a compact Riemannian manifold. A {\em self-interacting diffusion} on $M$ is a stochastic process solution to $$dX_t = dW_t(X_t) - \frac{1}{t}(\int_0^t \nabla V_{X_s}(X_t)ds)dt$$ where $\{W_t\}$ is a Brownian vector field on $M$ and $V_x(y) = V(x,y)$ a smooth function. Let $μ_t = \frac{1}{t} \int_0^t δ_{X_s} ds$ denote the normalized occupation measure of $X_t$. We prove that, when $V$ is symmetric, $μ_t$ converges almost surely to the critical set of a certain nonlinear free energy functional $J$. Furthermore, $J$ has generically finitely many critical points and $μ_t$ converges almost surely toward a local minimum of $J.$ Each local minimum having a positive probability to be selected.

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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