English

Sharp and plain estimates for Schr\"odinger perturbation of Gaussian kernel

Analysis of PDEs 2020-12-15 v1 Functional Analysis

Abstract

We investigate whether a fundamental solution of the Schr\"odinger equation tu=(Δ+V)u\partial_t u =(\Delta +V)\, u has local in time sharp Gaussian estimates. We compare that class with the class of VV for which local in time plain Gaussian estimates hold. We concentrate on VV that have fixed sign and we present certain conclusions for VV in the Kato class.

Keywords

Cite

@article{arxiv.2012.06817,
  title  = {Sharp and plain estimates for Schr\"odinger perturbation of Gaussian kernel},
  author = {Tomasz Jakubowski and Karol Szczypkowski},
  journal= {arXiv preprint arXiv:2012.06817},
  year   = {2020}
}
R2 v1 2026-06-23T20:55:18.297Z