Interface Fluctuations and Couplings in the D=1 Ginzburg–Landau Equation with Noise
Interface Fluctuations and Couplings in the D=1 Ginzburg–Landau Equation with Noise
复制标题
带噪声的 D=1 Ginzburg-Landau 方程中的界面波动和耦合
DOI:
10.1023/a:1021642824394
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发表时间:
1998
影响因子:
0.8
通讯作者:
E. Presutti
中科院分区:
文献类型:
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作者:
S. Brassesco;P. Buttà;A. De Masi;E. Presutti
We consider a Ginzburg–Landau equation in the interval [−ε−κ, ε−κ], ε>0, κ≥1, with Neumann boundary conditions, perturbed by an additive white noise of strength √ε We prove that if the initial datum is close to an "instanton" then, in the limit ε→0+, the solution stays close to some instanton for times that may grow as fast as any inverse power of ε, as long as “the center of the instanton is far from the endpoints of the interval”. We prove that the center of the instanton, suitably normalized, converges to a Brownian motion. Moreover, given any two initial data, each one close to an instanton, we construct a coupling of the corresponding processes so that in the limit ε→0+the time of success of the coupling (suitably normalized) converges in law to the first encounter of two Brownian paths starting from the centers of the instantons that approximate the initial data.
DOI:
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发表时间:
2005
期刊:
影响因子:
--
作者:
Iima;Makoto;利根川吉廣;利根川吉廣;利根川吉廣;利根川吉廣;利根川吉廣;利根川吉廣;利根川吉廣;利根川吉廣;利根川吉廣;利根川吉廣
通讯作者:
利根川吉廣