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quant-ph2006
Klein-Gordon and square-root operator equations for two-spinors and scalars: perturbation calculations for hydrogen-like systems
Tobias Gleim
There exists a Klein-Gordon-like equation for a spin-1/2 particle in an electromagnetic field with 2-spinors as wave functions that is a direct consequence of the corresponding Dir…
quant-ph2006
Spin-1/2 square-root operator equation with Coulomb potential - a perturbation analysis
Tobias Gleim
Seeking for a relativistic generalisation of the non-relativistic Schroedinger equation, one very soon arrives at equations with a square-root operator by having applied the quantu…