重整化破坏 $Φ^4_2 $ 方程中的有限时间分岔
Renormalization destroys a finite time bifurcation in the $Φ^4_2$ equation
AI总结:
本文研究了 $Φ^4_2 $ 方程在pitchfork分岔点处的特性,通过线性化SPDE证明其有限时间李雅普诺夫指数支持集为实数轴,与非奇异 $Φ^4_1 $ 方程形成对比。
摘要:
我们研究了奇异 $Φ^4_2 $ 方程在基础确定性动力学的pitchfork分岔点处的特性。为此,我们沿着其平稳解线性化SPDE,并证明其有限时间李雅普诺夫指数(FTLEs)的支持集是实数轴,无论分岔参数如何,这与非奇异 $Φ^4_1 $ 方程形成鲜明对比。证明依赖于平稳解及其重整化平方的支持定理。
英文摘要:
We study the singular $Φ^4_2$ equation at a pitchfork bifurcation of the underlying deterministic dynamics. To this aim, we linearize the SPDE along its stationary solution and show that the support of its finite-time Lyapunov exponents (FTLEs) is the real line, regardless of the bifurcation parameter and in sharp contrast to the non-singular $Φ^4_1$ equation. The proof relies on a support theorem for the stationary solution and its renormalized square.
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