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Limit clusters in the inviscid Burgers turbulence with certain random initial velocities

机译:限制具有无规初始速度的无粘性汉堡湍流的簇

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We study the infinite time shock limits given certain Markovian initial velocities to the inviscid Burgers turbulence. Specifically, we consider the one-sided case where initial velocities are zero on the negative half-line and follow a time-homogeneous nice Markov process X on the positive half-line. Finite shock limits occur if the Markov process is transient tending to infinity. They form a Poisson point process if X is spectrally negative. We give an explicit description when X is furthermore spatially homogeneous (a Levy process) or a self-similar process on (0, infinity). We also consider the two-sided case where we suppose an independent dual process in the negative spatial direction. Both spatial homogeneity and an exponential Levy condition lead to stationary shock limits. [References: 28]
机译:我们研究了给定无粘性Burgers湍流的某些马尔可夫初始速度的无限时间冲击极限。具体来说,我们考虑一个单面情况,其中负半线上的初始速度为零,并在正半线上遵循时间均匀的尼斯马尔可夫过程X。如果马尔可夫过程是瞬态趋向于无穷大,则会发生有限的冲击极限。如果X在光谱上为负,则它们形成泊松点过程。当X在空间上是同质的(征征过程)或在(0,无穷大)上的自相似过程时,我们给出明确的描述。我们还考虑了双向情况,我们假设在负空间方向上有一个独立的对偶过程。空间均匀性和指数征税条件都会导致平稳的冲击极限。 [参考:28]

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