7 papers
On the classification of invariant Gaussian measures for the 2D Euler equation
Ziyu Liu
We consider the two-dimensional incompressible Euler equation on with Gaussian random initial data having independent Fourier coefficients. For every , we prove…
Asymptotic strong Feller and weak observability inequality
Ziyu Liu, Shengquan Xiang
For a class of non-autonomous linear SPDEs, we establish the equivalence among asymptotic regularization, weak observability, and approximate null controllability for the associate…
A note on the strong Feller property via the moment method
Ziyu Liu, Shengquan Xiang
This note studies the 1D stochastic heat equation driven by a one-dimensional Brownian motion. We prove that the associated Markov process satisfies the strong Feller property unde…
Quantitative exponential mixing for the randomized Chirikov standard map
Ziyu Liu, Yankai Shi
We investigate the mixing properties of a randomized Chirikov standard map on . While the deterministic dynamics exhibit obstructions to global ergodicity, we establi…
Exponential mixing for the stochastic Allen--Cahn equation with localized white noise
Ziyu Liu, Shengquan Xiang, Zhifei Zhang
This paper studies the 1D stochastic Allen--Cahn equation on a bounded domain driven by localized white noise. We prove that the associated Markov process admits a unique invariant…
Local large deviations for randomly forced nonlinear wave equations with localized damping
Yuxuan Chen, Ziyu Liu, Shengquan Xiang +1
We study the large deviation principle (LDP) for locally damped nonlinear wave equations perturbed by a bounded noise. When the noise is sufficiently non-degenerate, we establish t…