Comment on "Relativistic covariance and nonlinear quantum mechanics: Tomonaga-Schwinger analysis''
arXiv:2602.06845
Abstract
Contrary to the central claim (Hsu, 2026) published in Physics Letters B, the Tomonaga--Schwinger equation remains covariant despite the nonlinear modification of it. The proof of covariance becomes simple after the loopholes and mistakes in Hsu's arguments are identified.
arXiv comment2pp, Comment on arXiv:2511.15935 [Phys.Lett.B872,140053(2026)]