"Potato kugel" for nuclear forces and a small one for acoustic waves
arXiv:2205.08593
Abstract
The "potato kugel" theorem of Aharonov, Schiffer and Zalcman, which concerns an inverse property of harmonic functions, is extended to the settings of the modified Helmholtz and Helmholtz equations that describe nuclear forces and acoustic waves respectively.
7 pages, no figures. arXiv admin note: text overlap with arXiv:2203.14833