A remark on the essential self-adjointness for Klein-Gordon type operators
Mathematical Physics
2023-07-19 v1 Analysis of PDEs
Functional Analysis
math.MP
Abstract
Here we discuss a new simplified proof of the essential self-adjointness for formally self-adjoint differential operators of real principal type, previously proved by Vasy (2020) and Nakamura-Taira (2021). For simplicity, here we discuss the second order cases, i.e., Klein-Gordon type operators only.
Cite
@article{arxiv.2202.13499,
title = {A remark on the essential self-adjointness for Klein-Gordon type operators},
author = {Shu Nakamura and Kouichi Taira},
journal= {arXiv preprint arXiv:2202.13499},
year = {2023}
}