• Corpus ID: 220496430

Lyapunov exponents of the SHE for general initial data

@article{Ghosal2020LyapunovEO,
  title={Lyapunov exponents of the SHE for general initial data},
  author={Promit Ghosal and Yier Lin},
  journal={arXiv: Probability},
  year={2020}
}
We consider the $(1+1)$-dimensional stochastic heat equation (SHE) with multiplicative white noise and the Cole-Hopf solution of the Kardar-Parisi-Zhang (KPZ) equation. We show an exact way of computing the Lyapunov exponents of the SHE for a large class of initial data which includes any bounded deterministic positive initial data and the stationary initial data. As a consequence, we derive exact formulas for the upper tail large deviation rate functions of the KPZ equation for general initial… 

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