Comment on `Parameter-dependent unitary transformation approach for quantum Rabi model'
Abstract
We discuss the elementary errors in D.G. Zhang's [New. J. Phys. 23, 093014 (2021)] claimed exact solution of the quantum Rabi model. The erroneous solution is seen to be nothing more than the combined solution of the simpler Jaynes-Cummings and anti-Jaynes-Cummings models obtained by neglecting terms in the model Hamiltonian.
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