Comment on "Relativistic covariance and nonlinear quantum mechanics: Tomonaga-Schwinger analysis''
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.
Fields of Study & Subjects
Relativity and Gravitational Theory
Quantum and Classical Electrodynamics
Quantum Mechanics and Applications
Publication details
- Journal / source
- arXiv (Cornell University)
- Publication date
- 6 February 2026
- Document type
- Preprint